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Herbaceous PerennialAnnual Biennial

Malva sylvestris var. mauritiana 'Primley Blue'
  • RHS Plants for pollinators

mallow 'Primley Blue'

A woody-based, short-lived perennial often grown as an annual or biennial, with a low, spreading habit and lobed and toothed green leaves. Clusters of pale powder blue flowers with deep violet-blue veins are produced from early to late summer

Synonyms
Malva sylvestris 'Primley Blue'

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Purple Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Malvaceae
Native to the UK
No
Foliage
Semi evergreen
Habit
Bushy, Spreading branched
Genus

Malva can be annuals, biennials or perennials, with rounded, often palmately lobed leaves and 5-petalled, open funnel-shaped flowers in the leaf axils or in terminal racemes

Name status

Accepted

How to grow

Cultivation

Thrives in light, moderately fertile, well drained soil in full sun; may need support if grown in richer soils (see staking perennials). Shelter from cold winds in areas prone to frost

Propagation

Propagate by seed or by softwood cuttings. Plants can be short-lived so annual propagation is recommended; early sowings may flower in the first year

Suggested planting locations and garden types
  • Cottage and informal garden
  • Patio and container plants
  • Wildflower meadow
  • Wildlife gardens
  • Flower borders and beds
Pruning

No pruning required

Pests

May be susceptible to aphids

Diseases

May be susceptible to hollyhock rust and soil-borne fungal diseases

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