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Obedient plant 'Miss Manners'

Physostegia virginiana 'Miss Manners' · Lamiaceae

Obedient plant 'Miss Manners' (Physostegia virginiana 'Miss Manners') in flower
Photo: Photo by David J. Stang, via Wikimedia Commons (CC BY-SA 4.0)

A clump-forming obedient plant that does not run, with pure white spikes from early summer to autumn on a compact plant.

Size
2 ft tall, 24 in wide
Zones
3 to 9
Light
Full sun to part sun
Flowers
Mid July to early September
Pets
No toxicity recorded
Job in a bed
Drift

A bed built around obedient plant 'Miss Manners'

The planner designed this bed around obedient plant 'Miss Manners' 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 966 that suit those conditions, and says below why obedient plant 'Miss Manners' stands where it does.

A 12 × 6 ft (3.7 × 1.8 m) bed at eye level in early August: Obedient plant 'Miss Manners', Mouse-ear coreopsis 'Nana', Winter heath, Little bluestem 'Standing Ovation', Joe Pye weed 'Little Joe', Silver sage, Ornamental onion 'Purple Sensation'.
A 12 × 6 ft (3.7 × 1.8 m) cottage garden in zone 6, full sun, seen from the path in early August.
5. Joe Pye weed 'Little Joe'55. Joe Pye weed 'Little Joe'55. Joe Pye weed 'Little Joe'54. Little bluestem 'Standing Ovation'44. Little bluestem 'Standing Ovation'44. Little bluestem 'Standing Ovation'46. Silver sage62. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'23. Winter heath33. Winter heath33. Winter heath33. Winter heath35. Joe Pye weed 'Little Joe'57. Ornamental onion 'Purple Sensation'77. Ornamental onion 'Purple Sensation'77. Ornamental onion 'Purple Sensation'72. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'21. Obedient plant 'Miss Manners'11. Obedient plant 'Miss Manners'11. Obedient plant 'Miss Manners'12. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'22. Mouse-ear coreopsis 'Nana'27. Ornamental onion 'Purple Sensation'77. Ornamental onion 'Purple Sensation'7
From above, to scale. Each circle is one plant, as wide as the room it needs.

The plants

  1. 2 Mouse-ear coreopsis 'Nana' × 13, yellow
  2. 3 Winter heath × 4, pink
  3. 4 Little bluestem 'Standing Ovation' × 3, tan
  4. 5 Joe Pye weed 'Little Joe' × 4, pink
  5. 6 Silver sage × 1, silver leaves
  6. 7 Ornamental onion 'Purple Sensation' × 5, purple

Why this plant

  • The only spires. The others are daisies, bells, plumes and others. Shape reads at a distance, where colours blur.
  • The only white. White sits between stronger colours and calms them.

Why here

  • In the middle. At 2 ft it is the step between winter heath (10 in) in front and little bluestem 'Standing Ovation' (3½ ft) behind: each is seen over the one before.
  • A step in the back row. Next to little bluestem 'Standing Ovation' (3½ ft) and Joe Pye weed 'Little Joe' (4 ft): no two neighbours there are the same height, so the back steps up and down like a skyline.
  • 3 plants in one group. Massed, one kind reads as a single shape. Scattered, it would look spotty.

Why now

  • In flower for 9 weeks. From mid July to early September.
  • Fills a gap. For two of those weeks nothing else on the plan is in flower.

Planned as a cottage garden: 28 of the 28 plants (100%), bulbs aside, stand alone or in groups of no more than five, small enough for the kinds to mingle. Mouse-ear coreopsis 'Nana' is the plant there is most of: 13 of the 33. Winter heath and little bluestem 'Standing Ovation' carry the bed through winter.

The planner's own design check: 13 Excellent, 3 Good, 1 Satisfactory. 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 obedient plant 'Miss Manners' goes in a border

At 2 ft it belongs in the middle of a bed. In the planner's ten height classes it is medium (24 in to 2½ ft).

Its job: drift. Planted in a small group of three or five, and repeated further along in the other number.

It has all the virtues of the species with none of the spread. White spikes cool down the hot colours of late summer.

  • White spires for the middle of a border
  • A well-behaved native
  • Cut flowers

What to plant with obedient plant 'Miss Manners'

Plants recorded as good partners for it, and what each pairing does:

  • Garden phlox: in flower together for eight weeks, from mid July; happy in the same moist soil.
  • Purple coneflower: in flower together for nine weeks, from mid July.
  • New England aster: tall enough (4 ft) to stand behind it; happy in the same moist soil.

Questions about obedient plant 'Miss Manners'

Does obedient plant 'Miss Manners' need sun or shade?

Obedient plant 'Miss Manners' grows in full sun (6 or more hours of direct sun a day) and part sun (4 to 6 hours of sun, including some afternoon sun).

It wants soil that stays evenly moist, of average fertility, and a good soak in dry spells.

What zones does obedient plant 'Miss Manners' grow in?

USDA zones 3 to 9. It is hardy to zone 3, which means it survives winter nights down to about −30 °F (−34 °C).

Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.

When does obedient plant 'Miss Manners' flower in my zone?

In zone 5 it flowers mid July to early September. As a summer flower it moves about half a week for every zone: earlier where it is warmer.

Roughly when obedient plant 'Miss Manners' is in flower
Zone 3Mid July to early September
Zone 4Mid July to early September
Zone 5Mid July to early September
Zone 6Mid July to early September
Zone 7Early July to early September
Zone 8Early July to early September
Zone 9Late June to early September

Worked out from Hopkins' bioclimatic law: spring arrives about four days later for each degree of latitude north, and one zone is roughly two degrees. A warm spring or a cold one moves any garden two weeks either way.

How far apart should obedient plant 'Miss Manners' be planted?

18 in (45 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 2 ft (65 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.

How many obedient plant 'Miss Manners' plants do I need?

At 18 in apart, set out in staggered rows:

  • 5 to fill 10 square feet (about 1 m²)
  • 7 for a single row 10 ft (3 m) long
  • 17 to fill a 4 × 8 ft bed on its own

In a mixed border, plant it as a group of three or five, with a second group further along in the other number.

In the bed above, the planner used three in one group.

Is obedient plant 'Miss Manners' 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.

Do deer eat obedient plant 'Miss Manners'?

They may. NC State does not list it as resistant to deer or rabbits. Where they visit, protect it, or plant it among ones they avoid.

What flowers after obedient plant 'Miss Manners'?

Obedient plant 'Miss Manners' is over by early September. These start as it finishes and carry the same spot on, so it never goes flat:

  • New England aster: from early September to mid October, 4 ft tall (a recorded partner).
  • Garden chrysanthemum: from mid September to late October, 24 in tall.
  • Bottle gentian: from late August to early October, 20 in tall, to stand in front of it and cover its fading stems.

What does obedient plant 'Miss Manners' look like in winter?

Obedient plant 'Miss Manners' dies down to the ground and there is nothing to see until spring. The old stems can be cut in autumn, or left until spring as shelter for overwintering insects.

Is obedient plant 'Miss Manners' good for bees and butterflies?

Obedient plant 'Miss Manners' is visited by pollinators, bees, butterflies and hummingbirds.

It is native to the United States and Canada (this is a named variety of the native plant).

More Physostegia

In these guides

Zone guides: Zone 3 · Zone 4 · Zone 5 · Zone 6 · Zone 7 · Zone 8 · Zone 9

In flower in: July · August · September

Every fact on record

Type
Perennial
Size
2 ft (65 cm) tall, 24 in (60 cm) wide
Plant
18 in (45 cm) apart
Height class
Medium (24 in to 2½ ft)
Place in the bed
Middle
Flowers
Mid July to early September; upright spires; white
Leaves
Medium texture, herbaceous; dark green
Shape
Upright, clumping
Hardy in
USDA zones 3 to 9
Light
Full sun, part sun
Soil
Average, evenly moist
Water
Moderate
Feeding
Light, in spring
Family
Lamiaceae
Comes from
Eastern North America, North Carolina
Attracts
Pollinators, bees, butterflies, hummingbirds

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.