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Malva sylvestris Primley Blue - Mallow

Malva sylvestris Primley Blue
Common Mallow, Cheese Flower, High Mallow, Hock, Marsh Mallow

4,1/5
19 reviews
9 reviews
4 reviews
2 reviews
3 reviews

On arrival, the plant already had orange spots that had embedded themselves in the leaves, indicating that it was likely affected by a plant virus. It arrived very small and had hardly any leaves. It did not survive the winter. I was hoping to get a healthy plant.

abeillesabeilles, 06/02/2024

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This plant carries a 12 months recovery warranty

More information

This mallow is a small prostrate perennial, sometimes grown as a biennial, producing small flowers with notched cups, veined with dark blue-violet on a mauve background. This easy-to-grow plant thrives in partial shade or in the sun and provides a magnificent display throughout summer, even in its first year of cultivation.
Flower size
4 cm
Height at maturity
40 cm
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -34°C
Soil moisture
Moist soil
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Best planting time March, September
Recommended planting time March to May, September to October
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Flowering time June to September
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Description

Malva sylvestris 'Primley Blue' is one of the smallest varieties of common mallow. This plant, more biennial than perennial, has a strangely prostrate habit, and tirelessly produces clusters of small, deeply notched flowers, with a delightful mauve colour heavily veined with dark blue-violet. This plant is easy to grow in partial shade or in the sun and provides a magnificent display throughout summer, even in its first year of cultivation. It is hardy, can tolerate almost any soil, and is drought tolerant.

 

Malva sylvestris, also known as high mallow, is a medicinal plant native to sunny fallow lands and woodlands in Europe, Asia, and North Africa. It belongs to the Malvaceae family, like the marsh mallow (Althaea officinalis) used by pharmacists.

'Primley Blue' is a top-notch horticultural selection. It is a prostrate biennial plant, measuring 30 to 50cm (12 to 20in) in height when flowering and occupying 50 to 60cm (20 to 24in) of ground space. In spring, it quickly forms a clump of large, cordate to rounded leaves, which are slightly lobed and crenate, with a dark, rich green colour. The flowering period is from June to September. The flowers are arranged in well-distributed clusters on sturdy stems, displaying perfect patterns and colour harmony. Against the pale mauve background of their 5-lobed corollas, veins resembling slender flames are drawn, in a dark blue almost indigo shade. The flowering attracts pollinating insects.

 

'Primley Blue' wood mallow, a classic in cottage gardens, is ideal in natural areas, on large banks. It works well with lavatera, with which it shares a family resemblance. It also pairs well with hybrid mulleins or small thistles (Echinops ritro), Centaurea dealbata, nigellas, and annual poppies.

The common mallow of our countryside is also a food plant. Its young leaves are consumed as a vegetable in Morocco, just like spinach, prepared with lemon juice. It is a delicious dish and useful for promoting intestinal transit. This plant is also known for soothing burns and digestive disorders. In Mediterranean cuisine, it is also used raw in salads. Nowadays, it is used in the preparation of soothing balms.

 

Malva sylvestris Primley Blue - Mallow in pictures

Malva sylvestris Primley Blue - Mallow (Flowering) Flowering
Malva sylvestris Primley Blue - Mallow (Foliage) Foliage

Flowering

Flower colour mauve
Flowering time June to September
Inflorescence Corymb
Flower size 4 cm

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Plant habit

Height at maturity 40 cm
Spread at maturity 50 cm
Growth rate normal

Botanical data

Genus

Malva

Species

sylvestris

Cultivar

Primley Blue

Family

Malvaceae

Other common names

Common Mallow, Cheese Flower, High Mallow, Hock, Marsh Mallow

Origin

Cultivar or hybrid

Planting and care

The wild mallow and its varieties can be planted in full sun, shade, or partial shade, in moist but well-drained soil that is not too fertile. It will even grow in limestone soil. In heavy or wet soil, add draining materials such as river sand or gravel. Mallows live longer in poor soils that are not too wet in winter, although they are more beautiful in fertile and moist soil. They adapt very well to the seaside.

Like all other species of the genus, this dwarf mallow 'Primley Blue' can be susceptible to rust, which is more unsightly than truly dangerous for the plant. Humid conditions favour the appearance of the disease. Close to lavateras, this plant is, however, a little less hardy. Cut it back every spring as one would do for the latter.

Planting period

Best planting time March, September
Recommended planting time March to May, September to October

Intended location

Suitable for Meadow
Type of use Edge of border, Slope
Hardiness Hardy down to -34°C (USDA zone 4) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous
Soil type Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, Ordinary but well-drained soil, not too fertile.

Care

Pruning instructions Cut the faded flowers to the ground. Prune the young plant in spring to promote its growth.
Pruning Pruning recommended once a year
Pruning time February to March, August to September
Disease resistance Average
Overwinter Can be left in the ground
4,1/5

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