Garden plants toxic to dogs

Every garden plant in the planner rated toxic to dogs, the most dangerous first, from ASPCA and NC State records.

Dogs eat plants more than cats do, and dig up bulbs, which is where several of the worst poisons are kept: daffodil, tulip and hyacinth bulbs are far more toxic than their leaves. Foxglove and lily of the valley affect the heart, and yew is one of the most poisonous plants in any garden.

This list is drawn from the ASPCA's lists and NC State's toxicity ratings; where the two disagree, the more cautious rating is used. In the planner, the Plants tab can show only non-toxic plants, and any plant unticked there is left off the plan.

429 plants: 229 perennials, 1 fern, 78 bulbs and 121 shrubs.

The ones most often planted

Mountain laurel

8 ft · late May to late June · severe, to people, dogs, cats and horses

A native evergreen with crimped, sugar-icing buds that open into cup-shaped flowers of white, pink or red in late spring, in clusters that cover the plant.
Delphinium

5 ft · late June to mid July · severe, to people, dogs, cats and horses

The great blue spire of the English border: dense columns of flowers up to head height in early summer.
Garden chrysanthemum

24 in · mid September to late October · mild, to people, dogs, cats and horses

The florist's mum: dense domes of daisies, pompoms or buttons in every autumn colour.
Oakleaf hydrangea

6½ ft · mid June to early August · mild, to people, dogs, cats and horses

A native shrub for every season: cone-shaped white flowers that age to pink, huge oak-shaped leaves that turn wine red and purple in autumn, and peeling, cinnamon-coloured bark in winter.
Foxglove

4 ft · early June to mid July · severe, to people, dogs, cats and horses

Tall spires of spotted, bell-shaped flowers bring height to part-shade beds in early summer.
Oriental poppy

2½ ft · late May to late June · mild, to people, dogs, cats and horses

Enormous, crepe-paper flowers in scarlet, orange, pink or white, usually with a black blotch at the base, in early summer.
Calla lily

2½ ft · mid May to mid July · moderate, to people, dogs, cats and horses

Pure white, funnel-shaped flowers of great elegance, each wrapped around a yellow spike, above glossy, arrow-shaped leaves.
Hyacinth

10 in · mid April to early May · moderate, to people, dogs, cats and horses

Dense, waxy spikes of intensely fragrant flowers in blue, purple, pink, white or soft yellow, in mid-spring.
Caladium

20 in · grown for its leaves · moderate, to people, dogs, cats and horses

Paper-thin, heart-shaped leaves in mixtures of white, pink, red and green, veined and splashed, from early summer until the first cool nights.
Oleander

10 ft · mid June to early October · severe, to people, dogs, cats and horses

A large evergreen with narrow, leathery leaves and clusters of pink, red or white flowers from early summer to autumn.
Winterberry

8 ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant

A native holly that drops its leaves in autumn to show branches packed with bright red berries, which last into winter until the birds take them.
Snowdrop

6 in · early March to late March · mild, to people, dogs and cats

Nodding white bells that push up through the last of the snow, weeks before anything else.

All 429 plants

Show all 429, by how toxic they are

Severe 71

Autumn monkshood 4 ft · mid September to mid October · severe, to people, dogs, cats and horses
Azalea 'Delaware Valley White' 4 ft · early May to late May · severe, to people, dogs, cats and horses
Azalea 'Hino-Crimson' 3 ft · early May to late May · severe, to people, dogs, cats and horses
Bicolor monkshood 4 ft · mid July to late August · severe, to people, dogs, cats and horses
Bloodroot 8 in · late March to mid April · severe, to people, dogs, cats and horses
Bog rosemary 'Blue Ice' 16 in · early May to late May · severe, to people, dogs, cats and horses
Bugbane 'Hillside Black Beauty' 5 ft · late August to early October · severe, to people, dogs, cats and horses
Catawba rhododendron 8 ft · late May to mid June · severe, to people, dogs, cats and horses
Cherry laurel 'Otto Luyken' 3½ ft · late April to mid May · severe, to people, dogs, cats and horses · host plant
Chinese delphinium 'Blue Butterfly' 16 in · late June to late August · severe, to people, dogs, cats and horses
Colchicum 'Waterlily' 6 in · mid September to mid October · severe, to people, dogs, cats and horses
Daphne 'Carol Mackie' 3½ ft · early May to late May · severe, to people, dogs, cats and horses
Daphne 'Eternal Fragrance' 2½ ft · early May to early October · severe, to people, dogs, cats and horses
Delphinium 5 ft · late June to mid July · severe, to people, dogs, cats and horses
Delphinium Magic Fountains 3 ft · late June to late July · severe, to people, dogs, cats and horses
Delphinium Pacific Giants 6 ft · late June to late July · severe, to people, dogs, cats and horses
Doll's eyes 2½ ft · early May to late May · severe, to people, dogs, cats and horses
Drooping leucothoe 4 ft · early May to late May · severe, to people, dogs, cats and horses
Drooping leucothoe 'Rainbow' 4 ft · early May to late May · severe, to people, dogs, cats and horses
Dwarf Japanese yew 4 ft · grown for its leaves · severe, to people, dogs, cats and horses
English bluebell 12 in · early May to late May · severe, to people, dogs, cats and horses
Evergreen azalea 4 ft · mid April to mid May · severe, to people, dogs, cats and horses
Flame azalea 8 ft · mid May to mid June · severe, to people, dogs, cats and horses
Foxglove 4 ft · early June to mid July · severe, to people, dogs, cats and horses
Foxglove 'Dalmatian Purple' 3½ ft · late May to mid July · severe, to people, dogs, cats and horses
Heavenly bamboo 6 ft · late May to late June · severe, to people, dogs, cats and horses
Hicks yew 11½ ft · grown for its leaves · severe, to people, dogs, cats and horses
Irish yew 13 ft · grown for its leaves · severe, to people, dogs, cats and horses
Italian arum 16 in · early May to late May · severe, to people, dogs, cats and horses
Japanese pieris 8 ft · late March to late April · severe, to people, dogs, cats and horses
Korean rhododendron 'Cornell Pink' 6½ ft · late March to mid April · severe, to people, dogs, cats and horses
Lily of the valley 8 in · early May to late May · severe, to people, dogs, cats and horses
Mayapple 16 in · grown for its leaves · severe, to people, dogs, cats and horses
Meadow saffron 6 in · mid September to mid October · severe, to people, dogs, cats and horses
Monkshood 4 ft · mid July to mid August · severe, to people, dogs, cats and horses
Mountain laurel 8 ft · late May to late June · severe, to people, dogs, cats and horses
Mountain laurel 'Elf' 3 ft · late May to late June · severe, to people, dogs, cats and horses
Mountain laurel 'Olympic Fire' 6½ ft · late May to late June · severe, to people, dogs, cats and horses
Nandina 'Firepower' 24 in · grown for its leaves · severe, to people, dogs, cats and horses
Northern Lights azalea 5 ft · mid May to early June · severe, to people, dogs, cats and horses
Oleander 10 ft · mid June to early October · severe, to people, dogs, cats and horses
Pieris 'Cavatine' 2½ ft · early April to early May · severe, to people, dogs, cats and horses
Pieris 'Little Heath' 2½ ft · grown for its leaves · severe, to people, dogs, cats and horses
Pieris 'Mountain Fire' 6½ ft · late March to late April · severe, to people, dogs, cats and horses
Pink lily of the valley 8 in · early May to late May · severe, to people, dogs, cats and horses
Pinxterbloom azalea 6 ft · early May to late May · severe, to people, dogs, cats and horses
Reblooming azalea 3½ ft · mid April to mid May · severe, to people, dogs, cats and horses
Red baneberry 24 in · early May to late May · severe, to people, dogs, cats and horses
Rhododendron 'Cunningham's White' 5 ft · mid May to early June · severe, to people, dogs, cats and horses
Rhododendron 'Nova Zembla' 6½ ft · late May to mid June · severe, to people, dogs, cats and horses
Rhododendron 'Olga Mezitt' 5 ft · late April to early May · severe, to people, dogs, cats and horses
Rhododendron 'PJM' 5 ft · late April to mid May · severe, to people, dogs, cats and horses
Rhododendron 'Purple Gem' 24 in · late April to early May · severe, to people, dogs, cats and horses
Rhododendron 'Roseum Elegans' 8 ft · late May to mid June · severe, to people, dogs, cats and horses
Rosebay rhododendron 15 ft · late June to mid July · severe, to people, dogs, cats and horses
Royal azalea 6½ ft · early May to late May · severe, to people, dogs, cats and horses
Rusty foxglove 5 ft · late June to early August · severe, to people, dogs, cats and horses
Schip laurel 10 ft · late April to early May · severe, to people, dogs, cats and horses · host plant
Siberian squill 5 in · late March to mid April · severe, to people, dogs, cats and horses
Spanish bluebell 16 in · early May to late May · severe, to people, dogs, cats and horses
Spreading English yew 3 ft · grown for its leaves · severe, to people, dogs, cats and horses
Spreading yew 'Densiformis' 4 ft · grown for its leaves · severe, to people, dogs, cats and horses
Straw foxglove 2½ ft · mid June to late July · severe, to people, dogs, cats and horses
Strawberry foxglove 3 ft · early June to mid July · severe, to people, dogs, cats and horses
Swamp azalea 6½ ft · late June to mid July · severe, to people, dogs, cats and horses
Tall larkspur 5 ft · mid July to late August · severe, to people, dogs, cats and horses
Whorled milkweed 24 in · late June to late August · severe, to people, dogs, cats and horses · host plant
Winter aconite 4 in · late February to mid March · severe, to people, dogs, cats and horses
Winter daphne 4 ft · early February to late March · severe, to people, dogs, cats and horses
Yak rhododendron 3½ ft · mid May to early June · severe, to people, dogs, cats and horses
Yellow foxglove 2½ ft · early June to mid July · severe, to people, dogs, cats and horses

Moderate 120

Aaron's beard 14 in · late June to late August · moderate, to people, dogs, cats and horses
Allium 'Ambassador' 4 ft · early June to early July · moderate, to people, dogs, cats and horses
Allium 'Gladiator' 4 ft · late May to late June · moderate, to people, dogs, cats and horses
Allium 'Globemaster' 3 ft · late May to late June · moderate, to people, dogs, cats and horses
Allium 'Mount Everest' 3½ ft · late May to mid June · moderate, to people, dogs, cats and horses
American elderberry 10 ft · mid June to mid July · moderate, to people, dogs, cats and horses
Bleeding heart 2½ ft · early May to early June · moderate, to people, dogs, cats and horses
Bleeding heart 'Gold Heart' 2½ ft · early May to early June · moderate, to people, dogs, cats and horses
Bleeding heart 'King of Hearts' 12 in · early May to early September · moderate, to people, dogs, cats and horses
Bleeding heart 'Luxuriant' 16 in · early May to early September · moderate, to people, dogs, cats and horses
Blue allium 20 in · early June to late June · moderate, to people, dogs, cats and horses
Bottlebrush buckeye 10 ft · late June to late July · moderate, to people, dogs, cats and horses
Bouncing Bet 24 in · late June to early September · moderate, to people, dogs, cats and horses
Boxwood 'Green Gem' 24 in · grown for its leaves · moderate, to people, dogs, cats and horses
Boxwood 'Green Mountain' 5 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Boxwood 'Green Velvet' 3 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Bugbane 'Brunette' 5 ft · early September to early October · moderate, to people, dogs, cats and horses
Burning bush 11½ ft · grown for its leaves · moderate, to people, dogs, cats and horses
Butterfly weed 24 in · late June to early August · moderate, to people, dogs, cats and horses · host plant
Buttonbush 6½ ft · late June to early August · moderate, to people, dogs, cats and horses
Caladium 20 in · grown for its leaves · moderate, to people, dogs, cats and horses
Calla lily 2½ ft · mid May to mid July · moderate, to people, dogs, cats and horses
Cardinal flower 3½ ft · late July to mid September · moderate, to people, dogs, cats and horses
Cardinal flower 'Queen Victoria' 3½ ft · late July to mid September · moderate, to people, dogs, cats and horses
Carolina allspice 8 ft · early May to late June · moderate, to people, dogs, cats and horses
Chives 14 in · mid May to mid June · moderate, to dogs, cats and horses
Christmas rose 12 in · late February to early April · moderate, to people, dogs, cats and horses
Christmas rose 'Jacob' 10 in · late November to late December · moderate, to people, dogs, cats and horses
Comfrey 'Hidcote Blue' 18 in · late April to late May · moderate, to people, dogs, cats and horses
Common boxwood 10 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Common milkweed 4 ft · late June to early August · moderate, to people, dogs, cats and horses · host plant
Corsican hellebore 2½ ft · late February to late April · moderate, to people, dogs, cats and horses
Curly onion 10 in · late July to early September · moderate, to dogs, cats and horses
Cypress spurge 12 in · early May to early June · moderate, to people, dogs, cats and horses
Daffodil 16 in · mid April to early May · moderate, to people, dogs, cats and horses
Daffodil 'Dutch Master' 18 in · early April to late April · moderate, to people, dogs, cats and horses
Daffodil 'February Gold' 12 in · mid March to early April · moderate, to people, dogs, cats and horses
Daffodil 'Ice Follies' 16 in · early April to late April · moderate, to people, dogs, cats and horses
Daffodil 'Jetfire' 10 in · late March to mid April · moderate, to people, dogs, cats and horses
Daffodil 'Tete-a-Tete' 7 in · late March to mid April · moderate, to people, dogs, cats and horses
Daffodil 'Thalia' 14 in · mid April to early May · moderate, to people, dogs, cats and horses
Darwin hybrid tulip 24 in · late April to mid May · moderate, to dogs, cats and horses
Donkey-tail spurge 6 in · early April to mid May · moderate, to people, dogs, cats and horses
Drumstick allium 2½ ft · late June to late July · moderate, to people, dogs, cats and horses
Dwarf English boxwood 2½ ft · grown for its leaves · moderate, to people, dogs, cats and horses
Dwarf flowering almond 4½ ft · late April to early May · moderate, to people, dogs, cats and horses · host plant
Elderberry 'Black Beauty' 8 ft · early June to late June · moderate, to people, dogs, cats and horses
Elderberry 'Black Lace' 6½ ft · early June to late June · moderate, to people, dogs, cats and horses
Elderberry 'Lemony Lace' 5 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Elephant ear 5 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Florida anise 8 ft · mid April to mid May · moderate, to people, dogs, cats and horses
Garlic chives 20 in · late August to mid September · moderate, to people, dogs, cats and horses
Giant allium 5 ft · early June to late June · moderate, to people, dogs, cats and horses
Glory-of-the-snow 6 in · late March to mid April · moderate, to people, dogs, cats and horses
Golden garlic 12 in · late May to late June · moderate, to people, dogs, cats and horses
Golden Japanese euonymus 6 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Golden St John's wort 'Sunburst' 3 ft · late June to late July · moderate, to people, dogs, cats and horses
Greigii tulip 10 in · mid April to early May · moderate, to dogs, cats and horses
Ground clematis 'Purpurea' 5 ft · early June to mid July · moderate, to people, dogs, cats and horses
Hardy cyclamen 5 in · late August to mid October · moderate, to people, dogs, cats and horses
Hellebore 'Ivory Prince' 16 in · early March to late April · moderate, to people, dogs, cats and horses
Hellebore 'Pink Frost' 16 in · late February to mid April · moderate, to people, dogs, cats and horses
Hyacinth 10 in · mid April to early May · moderate, to people, dogs, cats and horses
Hyacinth 'Delft Blue' 10 in · mid April to early May · moderate, to people, dogs, cats and horses
Jack-in-the-pulpit 18 in · early May to late May · moderate, to people, dogs, cats and horses
Japanese anemone 'September Charm' 3 ft · mid August to early October · moderate, to people, dogs, cats and horses
Japanese onion 'Ozawa' 10 in · early October to early November · moderate, to dogs, cats and horses
Japanese skimmia 3½ ft · mid April to early May · moderate, to people, dogs, cats and horses
Jonquil 12 in · mid April to early May · moderate, to people, dogs, cats and horses
Kalm's St John's wort 3 ft · early July to early August · moderate, to people, dogs, cats and horses
Korean boxwood 'Wintergreen' 3½ ft · grown for its leaves · moderate, to people, dogs, cats and horses
Lady tulip 12 in · mid April to early May · moderate, to dogs, cats and horses
Lantana 3 ft · late May to mid October · moderate, to people, dogs, cats and horses
Lenten rose 18 in · late March to early May · moderate, to people, dogs, cats and horses
Littleleaf boxwood 'Winter Gem' 4 ft · grown for its leaves · moderate, to people, dogs, cats and horses
Nodding onion 18 in · early July to early August · moderate, to dogs, cats and horses
Ornamental onion 'Millenium' 18 in · mid July to late August · moderate, to dogs, cats and horses
Ornamental onion 'Purple Sensation' 2½ ft · late May to early June · moderate, to people, dogs, cats and horses
Ornamental onion 'Summer Beauty' 20 in · early July to early August · moderate, to dogs, cats and horses
Ornamental rhubarb 6 ft · late May to late June · moderate, to people, dogs, cats and horses
Pasque flower 10 in · early April to early May · moderate, to people, dogs, cats and horses
Pink lily leek 6 in · late May to mid June · moderate, to people, dogs, cats and horses
Plume poppy 7 ft · early July to mid August · moderate, to people, dogs, cats and horses
Poet's daffodil 16 in · early May to late May · moderate, to people, dogs, cats and horses
Purple leaf sand cherry 8 ft · late April to early May · moderate, to people, dogs, cats and horses
Purple lobelia 3½ ft · mid July to mid September · moderate, to people, dogs, cats and horses
Purple milkweed 3 ft · early June to mid July · moderate, to people, dogs, cats and horses · host plant
Schubert's allium 20 in · late May to late June · moderate, to people, dogs, cats and horses
Showy milkweed 3½ ft · mid June to late July · moderate, to people, dogs, cats and horses
Sicilian honey garlic 3½ ft · late May to mid June · moderate, to people, dogs, cats and horses
Sneezeweed 4 ft · early August to late September · moderate, to people, dogs, cats and horses
Sneezeweed 'Mardi Gras' 3 ft · early July to early September · moderate, to people, dogs, cats and horses
Sneezeweed 'Moerheim Beauty' 3 ft · mid July to early September · moderate, to people, dogs, cats and horses
Sneezeweed 'Sahin's Early Flowerer' 3 ft · late June to early October · moderate, to people, dogs, cats and horses
Solitary clematis 24 in · mid June to early August · moderate, to people, dogs, cats and horses
Spreading plum yew 2½ ft · grown for its leaves · moderate, to people, dogs, cats and horses
Spring snowflake 10 in · early March to late March · moderate, to people, dogs, cats and horses
St John's wort 'Hidcote' 3½ ft · late June to mid September · moderate, to people, dogs, cats and horses
Star of Persia 20 in · late May to late June · moderate, to people, dogs, cats and horses
Stinking hellebore 24 in · late February to mid April · moderate, to people, dogs, cats and horses
Swamp milkweed 4 ft · early July to early August · moderate, to people, dogs, cats and horses · host plant
Swamp milkweed 'Ice Ballet' 3½ ft · early July to mid August · moderate, to people, dogs, cats and horses · host plant
Sweetshrub 'Aphrodite' 6½ ft · late May to late August · moderate, to people, dogs, cats and horses
Tarda tulip 5 in · mid April to early May · moderate, to dogs, cats and horses
Tulip 18 in · late April to mid May · moderate, to dogs, cats and horses
Tulip 'Angelique' 18 in · early May to late May · moderate, to dogs, cats and horses
Tulip 'Apeldoorn' 22 in · late April to early May · moderate, to dogs, cats and horses
Tulip 'Ballerina' 22 in · early May to mid May · moderate, to dogs, cats and horses
Tulip 'Fusilier' 12 in · mid April to early May · moderate, to dogs, cats and horses
Tulip 'Lilac Wonder' 7 in · mid April to early May · moderate, to dogs, cats and horses
Tulip 'Purissima' 16 in · mid April to late April · moderate, to dogs, cats and horses
Tulip 'Queen of Night' 24 in · early May to late May · moderate, to dogs, cats and horses
Tulip 'Spring Green' 18 in · early May to late May · moderate, to dogs, cats and horses
Turkestan onion 10 in · mid May to early June · moderate, to people, dogs, cats and horses
Turkestan tulip 10 in · late March to mid April · moderate, to dogs, cats and horses
Waterlily tulip 8 in · late March to mid April · moderate, to dogs, cats and horses
White bleeding heart 2½ ft · early May to early June · moderate, to people, dogs, cats and horses
Winter cyclamen 3 in · early February to late March · moderate, to people, dogs, cats and horses
Wintercreeper 16 in · grown for its leaves · moderate, to people, dogs, cats and horses
Wintercreeper 'Emerald 'n' Gold' 20 in · grown for its leaves · moderate, to people, dogs, cats and horses

Mild 238

Adam's needle 3 ft · late June to mid July · mild, to dogs, cats and horses · host plant
Anemone 'Wild Swan' 20 in · late May to early October · mild, to people, dogs, cats and horses
August lily 24 in · mid August to mid September · mild, to dogs, cats and horses
Autumn crocus 5 in · mid September to mid October · mild, to dogs and cats
Baby's breath 3 ft · late June to early August · mild, to people, dogs and cats
Beach wormwood 'Silver Brocade' 8 in · grown for its leaves · mild, to dogs, cats and horses
Bearded iris 2½ ft · late May to mid June · mild, to people, dogs, cats and horses
Bearded iris 'Immortality' 2½ ft · late May to mid June · mild, to people, dogs, cats and horses
Bigleaf hydrangea 5 ft · late June to late August · mild, to people, dogs, cats and horses
Bigleaf hydrangea 'Endless Summer' 4 ft · late June to mid September · mild, to people, dogs, cats and horses
Bigleaf hydrangea 'Nikko Blue' 5 ft · late June to early August · mild, to people, dogs, cats and horses
Blackberry lily 3 ft · mid July to mid August · mild, to people, dogs, cats and horses
Blue false indigo 4 ft · late May to mid June · mild, to people, dogs and cats · host plant
Blue flag iris 2½ ft · late May to late June · mild, to people, dogs, cats and horses
Blue holly 8 ft · grown for its leaves · mild, to people, dogs, cats and horses
Blue holly 'Blue Princess' 10 ft · grown for its leaves · mild, to people, dogs, cats and horses
Blue star creeper 3 in · late May to early August · mild, to people, dogs and cats
Burford holly 15 ft · grown for its leaves · mild, to people, dogs, cats and horses
Canada anemone 18 in · late May to late June · mild, to people, dogs, cats and horses
Carthusian pink 24 in · mid June to late August · mild, to people, dogs, cats and horses
Cheddar pinks 'Bath's Pink' 10 in · mid May to late June · mild, to people, dogs, cats and horses
Cheddar pinks 'Firewitch' 8 in · mid May to late June · mild, to people, dogs, cats and horses
Cheddar pinks 'Tiny Rubies' 4 in · late May to late June · mild, to people, dogs, cats and horses
Chinese globeflower 'Golden Queen' 2½ ft · early June to mid July · mild, to people, dogs, cats and horses
Chrysanthemum 'Clara Curtis' 24 in · early August to early October · mild, to people, dogs, cats and horses
Chrysanthemum 'Mary Stoker' 24 in · late August to mid October · mild, to people, dogs, cats and horses
Chrysanthemum 'Sheffield Pink' 2½ ft · late September to early November · mild, to people, dogs, cats and horses
Columbine 24 in · early May to mid June · mild, to people, dogs and cats
Columbine 'Nora Barlow' 2½ ft · mid May to late June · mild, to people, dogs and cats
Coralberry 4 ft · mid July to early August · mild, to people, dogs and cats
Cottage pinks 12 in · late May to late June · mild, to people, dogs, cats and horses
Cottage pinks 'Mrs Sinkins' 12 in · early June to early July · mild, to people, dogs, cats and horses
Cowslip 10 in · mid April to mid May · mild, to dogs, cats and horses
Crinum lily 4 ft · mid July to early September · mild, to people, dogs, cats and horses
Crocus 5 in · late March to mid April · mild, to dogs and cats
Crocus 'Ruby Giant' 4 in · early March to late March · mild, to dogs and cats
Crown imperial 3½ ft · late April to early May · mild, to people, dogs, cats and horses
Cushion spurge 18 in · late April to late May · mild, to people, dogs and cats
Cushion spurge 'Bonfire' 16 in · late April to late May · mild, to people, dogs and cats
Dahlia 3½ ft · mid July to mid October · mild, to people, dogs, cats and horses
Dahlia 'Bishop of Llandaff' 3½ ft · mid July to mid October · mild, to people, dogs, cats and horses
Dahlia 'Café au Lait' 4 ft · late July to mid October · mild, to people, dogs, cats and horses
Dianthus 'Kahori' 8 in · mid May to early September · mild, to people, dogs, cats and horses
Double snowdrop 5 in · early February to mid March · mild, to people, dogs and cats
Drumstick primrose 12 in · early April to early May · mild, to dogs, cats and horses
Dutch iris 22 in · mid May to early June · mild, to people, dogs, cats and horses
Dutchman's breeches 8 in · mid April to early May · mild, to people, dogs, cats and horses
Dwarf bearded iris 8 in · late April to mid May · mild, to people, dogs, cats and horses
Dwarf crested iris 6 in · late April to mid May · mild, to people, dogs, cats and horses
Dwarf Solomon's seal 8 in · early May to early June · mild, to people and dogs
Dwarf yaupon holly 4 ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Early crocus 4 in · early March to late March · mild, to dogs and cats
English lavender 'Hidcote' 18 in · late June to late July · mild, to dogs, cats and horses
English lavender 'Munstead' 16 in · late June to late July · mild, to dogs, cats and horses
English primrose 6 in · late March to early May · mild, to dogs, cats and horses
European columbine 2½ ft · mid May to late June · mild, to people, dogs and cats
False indigo 'Carolina Moonlight' 4 ft · mid May to mid June · mild, to people, dogs and cats
False indigo 'Lemon Meringue' 3 ft · mid May to mid June · mild, to people, dogs and cats
False indigo 'Purple Smoke' 4 ft · mid May to mid June · mild, to people, dogs and cats
Fan columbine 10 in · early May to early June · mild, to people, dogs and cats
Fernleaf peony 20 in · early May to late May · mild, to dogs, cats and horses
Fernleaf yarrow 'Cloth of Gold' 4½ ft · late June to late August · mild, to dogs, cats and horses
Fernleaf yarrow 'Coronation Gold' 3 ft · late June to late August · mild, to dogs, cats and horses
Feverfew 20 in · late June to mid August · mild, to people, dogs, cats and horses
Flowering spurge 2½ ft · early July to late August · mild, to people, dogs and cats
Fringed bleeding heart 16 in · early May to late August · mild, to people, dogs, cats and horses
Fringed pink 20 in · late June to late August · mild, to people, dogs, cats and horses
Garden chrysanthemum 24 in · mid September to late October · mild, to people, dogs, cats and horses
Gardenia 5 ft · late May to late July · mild, to dogs, cats and horses
Giant snowdrop 8 in · mid February to mid March · mild, to people, dogs and cats
Gladiolus 4 ft · mid July to early September · mild, to dogs, cats and horses
Golden columbine 3 ft · late May to mid July · mild, to people, dogs and cats
Golden marguerite 24 in · mid June to late August · mild, to dogs, cats and horses
Golden oregano 12 in · grown for its leaves · mild, to dogs, cats and horses
Golden ragwort 20 in · mid April to late May · mild, to people, dogs, cats and horses · host plant
Grape-leaf anemone 'Robustissima' 3½ ft · mid August to mid September · mild, to people, dogs, cats and horses
Great blue lobelia 2½ ft · early August to mid September · mild, to people, dogs, cats and horses
Grecian windflower 5 in · early April to early May · mild, to people, dogs, cats and horses
Griffith's spurge 'Fireglow' 3 ft · late May to early July · mild, to people, dogs and cats
Hardy begonia 24 in · mid August to late September · mild, to dogs, cats and horses
Hardy gladiolus 2½ ft · late May to mid June · mild, to dogs, cats and horses
Hosta 18 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Abiqua Drinking Gourd' 22 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'August Moon' 20 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Blue Angel' 3 ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Blue Mouse Ears' 8 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Curly Fries' 6 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Elegans' 2½ ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Empress Wu' 4 ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Fire and Ice' 14 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'First Frost' 16 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Francee' 22 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Frances Williams' 24 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Gold Standard' 22 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Golden Tiara' 14 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Great Expectations' 22 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Guacamole' 24 in · early August to late August · mild, to dogs, cats and horses
Hosta 'Halcyon' 18 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'June' 16 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Krossa Regal' 2½ ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Liberty' 2½ ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Patriot' 20 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Paul's Glory' 24 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Praying Hands' 16 in · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Royal Standard' 2 ft · early August to early September · mild, to dogs, cats and horses
Hosta 'Sagae' 2½ ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'So Sweet' 14 in · early August to early September · mild, to dogs, cats and horses
Hosta 'Stained Glass' 16 in · early August to late August · mild, to dogs, cats and horses
Hosta 'Sum and Substance' 3 ft · grown for its leaves · mild, to dogs, cats and horses
Hosta 'Wide Brim' 22 in · grown for its leaves · mild, to dogs, cats and horses
Iceland poppy 16 in · early May to late June · mild, to people, dogs, cats and horses
Inkberry 6½ ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Inkberry 'Gem Box' 2½ ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Inkberry 'Shamrock' 4 ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Iris 'Katharine Hodgkin' 5 in · early March to late March · mild, to people, dogs, cats and horses
Itoh peony 'Bartzella' 3 ft · late May to mid June · mild, to dogs, cats and horses
Japanese anemone 3 ft · mid August to early October · mild, to people, dogs, cats and horses
Japanese anemone 'Honorine Jobert' 4 ft · late August to mid October · mild, to people, dogs, cats and horses
Japanese aucuba 6½ ft · grown for its leaves · mild, to people, dogs and cats
Japanese holly 'Helleri' 3 ft · grown for its leaves · mild, to people, dogs, cats and horses
Japanese holly 'Sky Pencil' 8 ft · grown for its leaves · mild, to people, dogs, cats and horses
Japanese holly 'Soft Touch' 2½ ft · grown for its leaves · mild, to people, dogs, cats and horses
Japanese iris 3 ft · late June to mid July · mild, to people, dogs, cats and horses
Japanese primrose 20 in · mid May to late June · mild, to dogs, cats and horses
Lacecap hydrangea 'Twist-n-Shout' 4 ft · late June to mid September · mild, to people, dogs, cats and horses
Lavandin 'Grosso' 2½ ft · early July to early August · mild, to dogs, cats and horses
Lavandin 'Phenomenal' 2½ ft · late June to early August · mild, to dogs, cats and horses
Lavandin 'Provence' 2½ ft · early July to mid August · mild, to people, dogs, cats and horses
Louisiana iris 3 ft · mid May to early June · mild, to people, dogs, cats and horses
Lupine 3½ ft · late May to early July · mild, to people, dogs, cats and horses
Lupine Gallery Series 20 in · late May to early July · mild, to people, dogs, cats and horses
Lydian broom 24 in · late May to mid June · mild, to people, dogs, cats and horses
Maiden pinks 8 in · early June to mid July · mild, to people, dogs, cats and horses
Male fern 3 ft · grown for its leaves · mild, to people, dogs, cats and horses
Marsh marigold 16 in · mid April to early May · mild, to people, dogs, cats and horses
Mediterranean spurge 4 ft · late March to late May · mild, to people, dogs and cats
Mountain hydrangea 3½ ft · late June to mid August · mild, to people, dogs, cats and horses
Mountain hydrangea 'Bluebird' 4 ft · late June to late August · mild, to people, dogs, cats and horses
Mountain hydrangea 'Tuff Stuff' 2½ ft · late June to mid September · mild, to people, dogs, cats and horses
Netted iris 5 in · early March to late March · mild, to people, dogs, cats and horses
Oakleaf hydrangea 6½ ft · mid June to early August · mild, to people, dogs, cats and horses
Oakleaf hydrangea 'Alice' 10 ft · late June to late August · mild, to people, dogs, cats and horses
Oakleaf hydrangea 'Munchkin' 3½ ft · late June to late August · mild, to people, dogs, cats and horses
Oakleaf hydrangea 'Pee Wee' 3½ ft · mid June to early August · mild, to people, dogs, cats and horses
Oakleaf hydrangea 'Ruby Slippers' 3½ ft · mid June to early August · mild, to people, dogs, cats and horses
Oakleaf hydrangea 'Snow Queen' 6 ft · late June to late August · mild, to people, dogs, cats and horses
Ohio spiderwort 2½ ft · late May to mid July · mild, to people, dogs, cats and horses
Orchid primrose 16 in · mid June to mid July · mild, to dogs, cats and horses
Oregano 20 in · early July to late August · mild, to dogs, cats and horses
Oriental poppy 2½ ft · late May to late June · mild, to people, dogs, cats and horses
Oriental poppy 'Beauty of Livermere' 3½ ft · late May to late June · mild, to people, dogs, cats and horses
Oriental poppy 'Patty's Plum' 2½ ft · late May to late June · mild, to people, dogs, cats and horses
Ornamental oregano 'Herrenhausen' 20 in · mid July to mid September · mild, to dogs, cats and horses
Painted daisy 24 in · early June to mid July · mild, to people, dogs, cats and horses
Panicle hydrangea 'Bobo' 3 ft · mid July to mid September · mild, to people, dogs, cats and horses
Panicle hydrangea 'Fire Light' 6½ ft · mid July to early October · mild, to people, dogs, cats and horses
Panicle hydrangea 'Limelight' 7 ft · mid July to early October · mild, to people, dogs, cats and horses
Panicle hydrangea 'Little Lime' 4 ft · mid July to early October · mild, to people, dogs, cats and horses
Panicle hydrangea 'Pinky Winky' 7 ft · mid July to early October · mild, to people, dogs, cats and horses
Panicle hydrangea 'Quick Fire' 7 ft · late June to mid September · mild, to people, dogs, cats and horses
Panicle hydrangea 'Tardiva' 10 ft · mid August to mid October · mild, to people, dogs, cats and horses
Panicle hydrangea 'Vanilla Strawberry' 6½ ft · mid July to early October · mild, to people, dogs, cats and horses
Paperbush 6 ft · early February to late March · mild, to people, dogs and cats
PeeGee hydrangea 13 ft · late July to early October · mild, to people, dogs, cats and horses
Peony 3 ft · late May to late June · mild, to dogs, cats and horses
Peony 'Bowl of Beauty' 3 ft · late May to late June · mild, to dogs, cats and horses
Peony 'Coral Charm' 3 ft · mid May to early June · mild, to dogs, cats and horses
Peony 'Festiva Maxima' 3 ft · late May to mid June · mild, to dogs, cats and horses
Peony 'Karl Rosenfield' 3 ft · late May to mid June · mild, to dogs, cats and horses
Peony 'Sarah Bernhardt' 3 ft · late May to late June · mild, to dogs, cats and horses
Periwinkle 6 in · mid April to late May · mild, to dogs, cats and horses
Persian fritillary 3 ft · late April to mid May · mild, to people, dogs, cats and horses
Pink English lavender 18 in · late June to late July · mild, to dogs, cats and horses
Polyanthus primrose 8 in · late March to mid May · mild, to dogs, cats and horses
Purple wood spurge 20 in · mid April to late May · mild, to people, dogs and cats
Red spider lily 18 in · mid September to early October · mild, to people, dogs and cats
Robin's plantain 'Lynnhaven Carpet' 6 in · early May to late May · mild, to dogs, cats and horses
Rocky Mountain columbine 24 in · late May to late June · mild, to people, dogs and cats
Roman chamomile 6 in · late June to early August · mild, to dogs, cats and horses
Roof iris 14 in · mid May to early June · mild, to people, dogs, cats and horses
Saffron crocus 5 in · early October to early November · mild, to dogs and cats
Shasta daisy 'Banana Cream' 18 in · late June to late August · mild, to people, dogs and cats
Shasta daisy 'Becky' 3½ ft · early July to early September · mild, to people, dogs and cats
Shasta daisy 'Crazy Daisy' 2 ft · late June to late August · mild, to people, dogs and cats
Shasta daisy 'Snowcap' 14 in · late June to mid August · mild, to people, dogs and cats
Siberian iris 2½ ft · late May to late June · mild, to people, dogs, cats and horses
Siberian iris 'Caesar's Brother' 3½ ft · late May to late June · mild, to people, dogs, cats and horses
Siebold's primrose 10 in · early May to late May · mild, to dogs, cats and horses
Silver mound artemisia 12 in · grown for its leaves · mild, to people, dogs, cats and horses
Smooth hydrangea 'Annabelle' 4 ft · late June to early September · mild, to people, dogs, cats and horses · host plant
Smooth hydrangea 'Incrediball' 5 ft · late June to early September · mild, to people, dogs, cats and horses · host plant
Smooth hydrangea 'Invincibelle Spirit II' 3½ ft · late June to mid September · mild, to people, dogs, cats and horses · host plant
Sneezewort 'The Pearl' 24 in · late June to mid August · mild, to dogs, cats and horses
Snow crocus 3 in · early March to late March · mild, to dogs and cats
Snowberry 4 ft · mid June to mid July · mild, to people, dogs and cats · host plant
Snowdrop 6 in · early March to late March · mild, to people, dogs and cats
Snowdrop anemone 16 in · early May to late May · mild, to people, dogs, cats and horses
Soapweed yucca 2½ ft · mid June to mid July · mild, to dogs, cats and horses · host plant
Solomon's seal 3 ft · early May to late May · mild, to people and dogs
Southern blue flag 2½ ft · late May to late June · mild, to people, dogs, cats and horses
Southernwood 3½ ft · grown for its leaves · mild, to people, dogs, cats and horses
Spanish lavender 24 in · early May to late June · mild, to dogs, cats and horses
Spiderwort 24 in · late May to late July · mild, to people, dogs, cats and horses
Spiderwort 'Sweet Kate' 16 in · early June to late July · mild, to people, dogs, cats and horses
Spurge 'Ascot Rainbow' 20 in · late April to early June · mild, to people, dogs and cats
Spurge 'Blackbird' 20 in · grown for its leaves · mild, to people, dogs and cats
Spurge 'Chameleon' 18 in · grown for its leaves · mild, to people, dogs and cats
Squirrel corn 8 in · mid April to early May · mild, to people, dogs, cats and horses
Summer snowflake 18 in · late April to mid May · mild, to people, dogs and cats
Surprise lily 24 in · early August to late August · mild, to people, dogs and cats
Sweet iris 'Variegata' 2½ ft · late May to mid June · mild, to people, dogs, cats and horses
Sweet William 18 in · late May to late June · mild, to people, dogs, cats and horses
Tree peony 5 ft · early May to late May · mild, to dogs, cats and horses
Variegated Japanese iris 2½ ft · late June to mid July · mild, to people, dogs, cats and horses
Variegated Solomon's seal 2½ ft · early May to late May · mild, to people and dogs
Western bleeding heart 16 in · early May to late June · mild, to people, dogs, cats and horses
White mugwort 5 ft · early August to mid September · mild, to dogs, cats and horses
White sage 'Silver King' 3 ft · grown for its leaves · mild, to dogs, cats and horses
White sage 'Valerie Finnis' 24 in · grown for its leaves · mild, to dogs, cats and horses
White-margined wavy hosta 18 in · grown for its leaves · mild, to dogs, cats and horses
Wild columbine 24 in · early May to early June · mild, to people, dogs and cats
Wild lupine 20 in · mid May to late June · mild, to people, dogs, cats and horses · host plant
Winterberry 8 ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Winterberry 'Berry Poppins' 3½ ft · early June to late June · mild, to people, dogs, cats and horses · host plant
Winterberry 'Red Sprite' 4 ft · grown for its leaves · mild, to people, dogs, cats and horses · host plant
Winterberry 'Winter Red' 8 ft · early June to late June · mild, to people, dogs, cats and horses · host plant
Wood anemone 6 in · early April to early May · mild, to people, dogs, cats and horses
Wood spurge 20 in · late April to late May · mild, to people, dogs and cats
Woolly yarrow 8 in · late May to early July · mild, to dogs, cats and horses
Wormwood 'Powis Castle' 2½ ft · grown for its leaves · mild, to dogs, cats and horses
Yarrow 24 in · mid June to late August · mild, to dogs, cats and horses
Yarrow 'Cerise Queen' 24 in · mid June to late August · mild, to dogs, cats and horses
Yarrow 'Moonshine' 24 in · mid June to early August · mild, to dogs, cats and horses
Yarrow 'Paprika' 24 in · mid June to late August · mild, to dogs, cats and horses
Yarrow 'Terracotta' 2½ ft · late June to late August · mild, to dogs, cats and horses
Yellow flag iris 4 ft · late May to late June · mild, to people, dogs, cats and horses
Yucca 'Color Guard' 2½ ft · late June to mid July · mild, to dogs, cats and horses · host plant
Yucca 'Golden Sword' 2½ ft · late June to mid July · mild, to dogs, cats and horses