Dracocephalum argunense 'Fuji Blue'

RHS Plant Profile
dragonhead 'Fuji Blue'

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Herbaceous Perennial
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A clump-forming perennial to 30cm tall, with narrowly linear, rosemary-like leaves. In midsummer it produces tubular, deep violet-blue flowers with a lighter margin; these are held in whorls on softly hairy flowerspikes

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
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)
H6
Drought Resistance
Yes

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
A genus of around 60 to 70 species of flowering annuals, perennials and dwarf evergreen shrubs native to temperate parts of the Northern Hemisphere. Plants within this species have aromatic green foliage which can vary from needle-shaped to nettle-like and 2-lipped, sage-like tubular flowers in shades of purple, blue or white
Name Status
Accepted

How to Grow

Cultivation

Grow in well-drained, moderately fertile soil in full sun with some midday shade. Drought tolerant once established

Propagation

Propagate by division or basal cuttings in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Rock garden
  • Banks and slopes
  • Garden edging

Pruning

Cut old stems back to ground level in autumn or early spring

Pests

Generally pest-free

Diseases

Generally disease-free