Solidago canadensis

RHS Plant Profile

Canadian goldenrod

Other common names

golden plume

Herbaceous Perennial

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A rhizomatous perennial forming clumps of upright, downy stems to 2.5m tall with lance-shaped, toothed, hairy leaves and from late summer into early autumn, broadly conical sprays of densely clustered, small yellow flowers on horizontal branches

Position

Full sun

Soil Types

Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1-1.5 metres
Max Height: 1.5-2.5 metres

Growing Conditions

Loam Sand

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

Position

Full sun

Aspect: South–facing or West–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: Asteraceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Solidago are woody-based perennials, some invasive, with erect stems bearing narrow leaves and terminal panicles or racemes of small yellow flowers in summer and autumn
Name Status: Correct

How to Grow

Cultivation

Grow in poor to moderately fertile, preferably sandy, well-drained soil in full sun. Has the potential to become a nuisance if not managed well

Propagation

Propagate by division in autumn or spring

Suggested planting locations and garden types

Cottage and informal garden
Prairie planting
Wildlife gardens
Cut flowers
Flower borders and beds

Pruning

Cut back after flowering to prevent self-seeding

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews