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How to Grow Weigela

Weigela

Perennial

Plant weigela in full sun for the best flowers and foliage colour, in any reasonable garden soil. Prune immediately after flowering in early summer by cutting back flowered shoots to strong new growth and removing one in three of the oldest stems at the base. It is fully hardy, reliable, and loved by bees. Purple-leaved varieties need good light to maintain their colour.

Yearly Lifecycle

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JanFebMarAprMayJunJulAugSepOctNovDec
Bud Break Flowering Growing Leaf Fall

Care Essentials

Mulch with compost after pruning. Rarely needs additional feeding.

Watch For

  • Generally pest-free
  • Occasional leaf spot

Companions

Roses, Geraniums, Nepeta

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Care Requirements

☀️ Light

Full sun for best flowers and foliage colour

Full sun to partial shade. Flowers best in full sun. Purple-leaved varieties need good light to maintain their foliage colour.

💧 Watering

Regular when young; tolerant once established

Water regularly during the first year. Established plants are fairly drought-tolerant but benefit from watering in prolonged dry spells during flowering.

🌱 Fertilizing

Compost mulch after pruning; rarely needs more

Mulch with compost after pruning in early summer. Rarely needs additional feeding on reasonable soil.

✂️ Pruning

After flowering; remove oldest stems yearly

Prune immediately after flowering in early summer. Cut back flowered shoots to strong new growth and remove one in three of the oldest stems at the base each year.

Growing Tips

Prune right after flowering

Prune immediately after flowering in early summer. Cut back flowered shoots to strong new growth and remove the oldest stems at the base to keep the shrub vigorous.

Full sun for best colour

Plant in full sun for the best display. Purple-leaved varieties like 'Wine and Roses' need good light to maintain their rich foliage colour.

Mulch after pruning

Mulch with compost after pruning in early summer. Weigela rarely needs additional feeding on reasonable soil.

Generally pest-free

Weigela is generally trouble-free. Capsid bugs may cause ragged leaf holes but plants recover well — tolerate minor damage and encourage ground beetles.

Pests & Diseases

Pest Capsid Bug

Identification: Ragged holes in leaves and distorted shoot tips; the small green bugs are rarely seen as they drop when disturbed

Organic treatment:
  • Tolerate minor damage as plants recover well
  • Encourage natural predators such as ground beetles
Chemical treatment:
  • Spray with deltamethrin or lambda-cyhalothrin if damage is severe
Pest Leaf-eating Caterpillars

Identification: Irregular holes in leaves, visible caterpillars or frass on foliage

Organic treatment:
  • Hand-pick caterpillars when seen
  • Encourage birds and parasitic wasps
Chemical treatment:
  • Spray with pyrethrin-based insecticide for heavy infestations
Pest Aphids

Identification: Clusters of small green or black insects on shoot tips and flower buds, sticky honeydew

Organic treatment:
  • Squash by hand or blast off with water
  • Encourage ladybirds and hoverflies
Chemical treatment:
  • Spray with fatty acid or plant oil-based insecticide
Disease Leaf Spot

Symptoms: Brown or purple spots on leaves, sometimes with a yellow halo, leading to premature leaf drop

Treatment: Remove and destroy badly affected leaves. Improve air circulation by thinning crowded growth

Prevention: Avoid overhead watering. Clear fallen leaves in autumn

Disease Honey Fungus Armillaria mellea

Symptoms: Sudden dieback of branches or whole plant, white fungal mycelium under bark at base, honey-coloured toadstools in autumn

Treatment: Remove and destroy infected plants including roots

Prevention: Avoid planting in sites with known honey fungus history

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