Scutellaria baicalensis

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Herbaceous Perennial
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A bushy perennial to a height of 30cm, becoming more upright as the season progresses. The stems are purplish-tinged with lance-shaped, hairy-margined green leaves. From early summer to early autumn, blue, hairy-lipped flowers are borne on just one side of the stems

Position

Full sun

Soil Types

Sand, Loam, Chalk

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

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

Position

Full sun
Aspect
West–facing or South–facing
Exposure
Exposed or 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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Spreading branched, Clump forming
Genus
Scutellaria are annuals, herbaceous perennials or sub-shrubs with opposite pairs of leaves and blue, violet, yellow or white, two-lipped, tubular flowers borne in the leaf axils or in terminal spikes
Name Status
Correct
Plant Range
Siberia, Momgolia, China, Japan

How to Grow

Cultivation

Enjoys a sunny position in a well-drained soil that does not dry out completely in summer

Propagation

Propagate by seed in autumn, or by basal or softwood cuttings in late spring or early summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Prairie planting
  • Wildlife gardens
  • Banks and slopes
  • Flower borders and beds

Pruning

Cut back growth as it dies back in autumn

Pests

May be susceptible to aphids

Diseases

Generally disease-free