Sidalcea 'Party Girl'

RHS Plant Profile

prairie mallow 'Party Girl'

RHS

Herbaceous Perennial

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'Party Girl' is a seed-raised, slightly variable deciduous perennial to 75cm tall, with rounded basal leaves, lobed stem leaves, and loose racemes of white-centred, bright pink flowers 5cm across in early summer

Position

Full sun

Soil Types

Loam

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Loam

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

Position

Full sun

Aspect: South–facing or West–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: Malvaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Sidalcea can be annuals or perennials, forming a clump of rounded or palmately lobed basal leaves, with erect stems bearing more deeply divided leaves and terminal racemes of 5-petalled mallow-like flowers
Name Status: Accepted

How to Grow

Cultivation

Best grown in full sun and moist but well-drained soil that is not wet in winter. Plants can be short lived in heavy soils

Propagation

Propagate by seed or division in spring

Suggested planting locations and garden types

Coastal
Cottage and informal garden
City and courtyard gardens
Flower borders and beds

Pruning

Cut back after flowering to encourage fresh foliage and a longer flowering season

Pests

May be susceptible to slug and snail damage on young growth but generally pest free

Diseases

May be susceptible to rust diseases but generally disease-free