Betonica macrantha 'Robusta'

RHS Plant Profile
betony 'Robusta'

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betony 'Robusta' Dorling Kindersley 2003
betony 'Robusta' RHS

Synonyms

Stachys macrantha 'Robusta'

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Herbaceous Perennial
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An upright clump-forming herbaceous perennial to 60cm, with strongly veined, ovate, dark green leaves with scalloped edges. Hooded purplish-pink flowers 3cm in length are borne in dense spikes

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Betonica is a genus of native perennial wildflowers with narrow, oval leaves on upright stems. Bright purple to red flowers appear throughout the summer and into early autumn.
Name Status
Accepted

How to Grow

Cultivation

Grow in moderately fertile, well-drained soil; full sun ideal but tolerates partial shade

Propagation

Propagate by division or remove rooted sections in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Gravel garden
  • Cut flowers
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

Generally disease-free