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Hibiscus syriacus 'Collie Mullins'

tree hollyhock

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For a generous splash of summer colour, this upright, deciduous shrub produces large, ruffled blooms in rich rose-pink shades.

Hibiscus syriacus 'Collie Mullins' has a naturally bushy, vase-shaped habit, with bright green, lobed foliage that provides a fresh backdrop for its showy flowers. The semi-double to double blooms have layers of gently crinkled petals, with deeper pink and burgundy tones towards the centre, creating plenty of detail up close.

Flowering from mid-summer into early autumn, it makes an eye-catching specimen for sunny borders, where it adds colour well into the season.

How to care for Hibiscus syriacus Collie Mullins:

Plant in a sheltered, sunny location with moist, fertile soil. While they can tolerate some dryness, consistent moisture will encourage lush growth and abundant blooms.

If growing them in large containers, protect the roots from harsh winter conditions by wrapping pots and plants using horticultural fleece or move to a sheltered spot such as a southerly facing wall.

Mulch the base of border plants with a dry material like bark chips to insulate the roots and prevent frost damage. Regularly remove spent blooms to prolong flowering.

Pruning should be done in late winter or early spring, before new growth emerges. Prune back to strong, healthy buds to encourage new growth and shape the plant. Removing old and damaged wood will also help to improve air circulation and reduce the risk of disease.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
4m
Eventual spread:
3m
Position:

Full sun

Rate of growth:

Average

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.

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