loading

Malva × clementii 'Rosea'

tree mallow ( syn. Lavatera olbia Rosea )

Product Image
This popular tree or shrub is grown for the masses of dark pink, hollyhock-like flowers up to 7cm across that smother its branches from June to September. Deeply lobed, and bright green, its leaves are attractive too. Extremely long-flowering, this vigorous tree mallow will thrive in a well-drained shrub or mixed border, but needs plenty of space to spread itself out as it puts on tremendous growth in just one season. In cold areas of the country it is best grown against a warm wall to minimise wind and frost damage.

How to care for Malva × clementii Rosea:

Plant Malva in a sunny position with well-drained, moderately fertile soil, adding organic matter at planting time for best results. Space plants around 45cm (18in) apart to improve air circulation and reduce the risk of mildew.

Water regularly until established, then only during prolonged dry spells, as mature plants become drought-tolerant. Apply a balanced fertiliser in spring to support growth and flowering, but avoid excessive nitrogen, which can encourage more leaves than blooms.

Keep an eye out for rust and powdery mildew, removing affected leaves and ensuring good airflow to prevent disease.

In exposed areas, tall stems may need staking to prevent wind damage. Deadhead spent flowers regularly to prolong blooming and reduce self-seeding unless seedlings are desired. After flowering, cut back to within 30cm (12in) of the ground in spring once frosts have passed, and mulch with well-rotted compost or manure to retain moisture and improve soil structure.

In windy sites, shortening stems by half in autumn helps minimise the risk of damage.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
2m
Eventual spread:
2m
Position:

Full sun

Rate of growth:

Fast-growing

Soil:

Moderately fertile, moist, well-drained soil

Hardiness:

Fully hardy

  • InformationThis shrub is deciduous so it will lose all its leaves in autumn, then fresh new foliage appears again each spring.

Product options

Product options image
PL00080109
2 litre pot
£24.99
In stock
(shipped within 2-3 working days)
1
Delivery options (pick your preferred option at checkout)
Standard Delivery£5.99
Named Day Delivery£10.99

Goes well with

Become an RHS Member today and save 25% on your first year