Lamium galeobdolon 'Kirkcudbright Dwarf'

RHS Plant Profile

yellow archangel 'Kirkcudbright Dwarf'

Herbaceous Perennial

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A compact, deciduous, mat-forming perennial to 20cm tall, with erect or creeping stems bearing ovate, silver-streaked, dark green leaves 3cm long. Spikes of whorled, yellow flowers bloom in summer

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1.5-2.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full shade Partial shade

Aspect: North–facing or West–facing or East–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): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Lamiaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Matforming
Genus: Lamium can be annuals or, more usually, perennials, with coarsely toothed ovate leaves and 2-lipped, tubular flowers borne in whorls forming a short spike
Name Status: Accepted

How to Grow

Cultivation

Plant in moist, free-draining soil in either full or dappled shade in a sheltered position. After flowering, it can be trimmed back to encourage the production of more foliage for ground cover. Has the potential to become a nuisance if not managed well

Propagation

Propagate by division or softwood cuttings

Suggested planting locations and garden types

Cottage and informal garden
Wildflower meadow
Wildlife gardens
Banks and slopes
Ground cover

Pruning

Generally not required

Pests

Generally pest-free

Diseases

Generally disease-free