Silver sage
Salvia argentea · Lamiaceae
A flat rosette of huge leaves covered in long, silky, silver-white wool, like the ears of a rabbit. Tall candelabras of white flowers follow in its second summer.
- Size
- 12 in tall, 24 in wide
- Zones
- 5 to 8
- Light
- Full sun
- Flowers
- Grown for its leaves; flowers mid June to mid July
- Pets
- No toxicity recorded
- Job in a bed
- Specimen
A bed built around silver sage
The planner designed this bed around silver sage when this page was made: a 12 × 6 ft (3.7 × 1.8 m) cottage garden in zone 6, full sun. It chose the other plants from the 715 that suit those conditions and its dry soil, and says below why silver sage stands where it does.
The plants
- 1 Silver sage × 1, silver leaves
- 2 Cheddar pinks 'Firewitch' × 8, pink
- 3 Heath aster 'Snow Flurry' × 3, white
- 4 Little bluestem 'The Blues' × 8, tan
- 5 False sunflower 'Summer Nights' × 3, yellow
- 6 Tennessee coneflower × 3, pink
- 7 Ornamental onion 'Purple Sensation' × 5, purple
- 8 Star of Persia × 4, purple
Why this plant
- The only plant grown for its leaves. Leaf lasts all season, where a flower lasts a few weeks.
- The only bold leaves here. The rest are fine and medium. A change of leaf keeps plants distinct when nothing is in flower.
Why here
- On the front edge. At 12 in it frames the bed without hiding it, and it is in leaf all season. It finishes 14% of the edge.
- One plant, alone. A feature plant is seen as an object, and needs clear ground around it.
- Bold leaf against fine. Cheddar pinks 'Firewitch' is beside it: the strongest contrast of leaf there is.
Why now
- Here for its leaves, into winter. They cover the 17 weeks between early March and late November when nothing on the plan is in flower.
Planned as a cottage garden: 26 of the 26 plants (100%), bulbs aside, stand alone or in groups of no more than five, small enough for the kinds to mingle. The front edge is finished with silver sage, Cheddar pinks 'Firewitch' and heath aster 'Snow Flurry'. The flowering is at its height from late May, with 3 kinds out together.
The planner's own design check: 13 Excellent, 4 Good. It flags one thing to watch: Nothing on this plan is highly poisonous or an aggressive spreader.
Open this bed in the planner Change its size, the sun or the style, move plants about, or swap one for another.
Where silver sage goes in a border
At 12 in it belongs at the front of a bed. In the planner's ten height classes it is low (6 to 12 in).
Its job: specimen. A feature plant with a shape of its own. It stands alone with room around it, and repeats only at a distance.
Grown for the rosette, one of the most tactile things in the garden. It is a biennial or short-lived perennial: cut out the flower stem to keep the leaves, or let it seed.
- Silver foliage in a gravel garden
- A plant to touch
- Contrast with dark leaves
What to plant with silver sage
Plants recorded as good partners for it, and what each pairing does:
- Sedum 'Purple Emperor': adds the flowers, early August to mid September; happy in the same dry soil.
- Blue fescue: fine leaves against its bold ones; a low mound at the foot of its spires; happy in the same dry soil.
- English lavender 'Hidcote': adds the flowers, late June to late July; fine leaves against its bold ones; a low mound at the foot of its spires.
Questions about silver sage
Does silver sage need sun or shade?
Silver sage grows in full sun (6 or more hours of direct sun a day).
It wants dry, sharply drained soil, on the lean side, with no feeding, and little watering once settled. Once settled in, it stands drought.
What zones does silver sage grow in?
USDA zones 5 to 8. It is hardy to zone 5, which means it survives winter nights down to about −10 °F (−23 °C).
Above zone 8 it struggles: the zones measure winter cold, but a plant's top zone usually means the summers are too hot or the winters too mild for it to rest.
Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.
How far apart should silver sage be planted?
20 in (50 cm) apart, from the middle of one plant to the middle of the next. That is a little closer than its full width of 24 in (60 cm), so a group knits into one patch.
It grows 12 in (30 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.
How many silver sage plants do I need?
At 20 in apart, set out in staggered rows:
- 4 to fill 10 square feet (about 1 m²)
- 7 for a single row 10 ft (3 m) long
- 14 to fill a 4 × 8 ft bed on its own
In a mixed border, plant it as one, with clear ground around it: a feature plant is seen as an object, and a group of them is a thicket.
In the bed above, the planner used one in one group.
Is silver sage poisonous to dogs and cats?
No toxicity is recorded for dogs, cats, horses or people, according to NC State Extension.
"Not toxic" is not "edible": a pet that eats a lot of any plant can be sick.
Is there a native plant like silver sage?
Silver sage comes from Mediterranean, Southern Europe, Northern Africa. These North American natives come closest to doing its job:
- Prairie alumroot: an edging, not a specimen, 6 in narrower.
- Eastern prickly pear: the same job in a bed and the same size; flowers mid June to early July, keeps its leaves in winter.
- Beach wormwood 'Silver Brocade': a carpet, not a specimen, 4 in shorter.
Matched the way the planner's Swap button matches plants: the same job in a bed, then size, then flowering time.
Do deer eat silver sage?
Mostly not. NC State lists it as resistant to deer. No plant is proof against a hungry deer in a hard winter, but this one is low on the menu.
What does silver sage look like in winter?
Silver sage holds some of its leaves into winter, more in a mild year or a sheltered spot, and they look tired by March. Cut the old ones off as new growth starts.
More Salvia
- Anise sage 'Black and Blue' Salvia guaranitica 'Black and Blue'
- Autumn sage Salvia greggii
- Blue sage Salvia azurea
- Bog sage Salvia uliginosa
- Clary sage Salvia sclarea
- Culinary sage Salvia officinalis
- Meadow sage Salvia nemorosa
- Meadow sage 'Caradonna' Salvia nemorosa 'Caradonna'
- Mexican bush sage Salvia leucantha
- Rosemary Salvia rosmarinus
- Russian sage Salvia yangii (formerly Perovskia)
- Russian sage 'Little Spire' Salvia yangii 'Little Spire'
- Salvia 'Hot Lips' Salvia microphylla 'Hot Lips'
- Salvia 'May Night' Salvia nemorosa 'Mainacht'
- Whorled sage 'Purple Rain' Salvia verticillata 'Purple Rain'
- Wood sage 'Blue Hill' Salvia x sylvestris 'Blauhügel'
- Wood sage 'East Friesland' Salvia nemorosa 'Ostfriesland'
In these guides
Every fact on record
- Type
- Perennial
- Size
- 12 in (30 cm) tall, 24 in (60 cm) wide
- Plant
- 20 in (50 cm) apart
- Height class
- Low (6 to 12 in)
- Place in the bed
- Front
- Flowers
- Mid June to mid July; upright spires; white
- Leaves
- Bold texture, semi-evergreen; silver
- Shape
- Mounding, self-seeding
- Hardy in
- USDA zones 5 to 8
- Light
- Full sun
- Soil
- Lean, dry and sharply drained
- Water
- Low
- Feeding
- None needed
- Family
- Lamiaceae
- Comes from
- Mediterranean, Southern Europe, Northern Africa
- Stands up to
- Deer, drought
Checked against NC State Extension. Flowering times are for zone 5: later in colder zones, earlier in warmer ones. Toxicity and spread information is a general gardening guide, not veterinary or medical advice, and invasive status varies by region. If a person or pet eats a plant, contact poison control or a vet. Check your local invasive species list before planting anything with a spread warning.