Cleome houtteana 'Rose Queen'

RHS Plant Profile

spider flower 'Rose Queen'

RHS

Synonyms

Cleome 'Rose Queen', Cleome hassleriana 'Rose Queen'

Annual Biennial Bedding

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A tall, upright, half-hardy annual with attractive, palmate leaves (which are aromatic and sticky) on spiny stems. Terminal clusters of pink and white flowers are produced in summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1 year
Max Spread: 0.1-0.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

Aspect: 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): H2

Colour & Scent

Fragrance Foliage

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Cleomaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Genus: Cleome are annuals with erect stems bearing palmately divided leaves, and terminal racemes of 4-petalled flowers with conspicuous stamens
Name Status: Unresolved

How to Grow

Cultivation

Best grown in sandy or well-drained soil in a warm, sunny spot

Propagation

Propagate by seed

Suggested planting locations and garden types

Architectural
Cottage and informal garden
Sub-tropical
Flower borders and beds

Pruning

deadhead to prolong flowering and prevent self-seeding

Pests

May be susceptible to aphids

Diseases

Generally disease-free