Malva trimestris 'Mont Blanc'

Synonyms

Lavatera trimestris 'Mont Blanc'

Herbaceous Perennial

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A bushy, deciduous, woody-based, short-lived perennial to around 60cm in height, often grown as an annual or biennial, with a low, spreading habit and lobed and toothed green leaves. Clusters of very large, white, trumpet-shaped flowers appear from June through to September

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Chalk Clay 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): H5

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: 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. May self-seed in place, though seedlings may vary

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Wildflower meadow
Wildlife gardens
Flower borders and beds
Wall side borders

Pruning

No pruning required

Pests

May be susceptible to aphids

Diseases

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