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Verbena rigida f. lilacina 'Polaris' (Lilac slender vervain 'Polaris')

Other names: Slender vervain 'Polaris', Verbena rigida 'Polaris', Rough verbena 'Polaris', Stiff verbena 'Polaris', Sandpaper verbena 'Polaris'

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Variety or Cultivar
'Polaris' is a mound-forming, borderline hardy, deciduous perennial, often grown as an annual, with rigid, oblong, toothed, dark green leaves and wiry, square stems bearing dense clusters of small, pale lilac flowers from early summer into autumn.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.45 m 0.6 m 1-2 years
1 ft 1 ft 1-2 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grow in moist but well-drained, moderately fertile soil in full sun. In cold areas, protect with a dry winter mulch.

Suggested uses

Gravel, Containers/Patio, Beds and borders, Cottage/Informal, City, Garden edging

UK hardiness

H3

USDA zones

Zone 8, Zone 9, Zone 10, Zone 11

Sunset zone

12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

WUCOLS

North-Central Coastal = Low
Central Valley = Low
South Coastal = Low
South Inland = Low
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Cushion or Mound Forming

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Toxicity

Not toxic

Plant care

Pruning

Deadhead regularly to prolong flowering. Cut back after flowering.

Propagation methods

Seed, Stem tip cuttings

Pests

Slugs

Aphids

Leafhoppers

Diseases

Generally disease free

Take softwood cuttings

Deadhead regularly (optional)

Plant container grown plants in a sunny sheltered spot

Protect in winter with dry mulch (in cold areas)

Bring tender indoors if container grown (in cold areas)

Apply a fertiliser container grown plants regularly

Sow seed in containers with heat (spring)

Plant tender plants after danger of frost has passed (late spring, early summer)

Other plants

Plants in this Genus (0)

Verbena

Companion plants (2)

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Rudbeckia hirta 'Toto'
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Rudbeckia hirta 'Toto' Black-eyed Susan 'Toto'
Sambucus racemosa 'Plumosa Aurea'
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Sambucus racemosa 'Plumosa Aurea' European Red Elder
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Related content

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