How to Grow Silk Tassel Bush
Garrya elliptica
Garrya elliptica is an elegant evergreen shrub prized for its long silvery-green catkins in midwinter. Best grown against a sheltered wall in sun or partial shade. Tolerates poor soil and coastal conditions. Prune lightly after catkins fade in spring.
Yearly Lifecycle
Care Essentials
Apply a general-purpose fertiliser in spring. Established plants rarely need feeding.
Watch For
- Leaf spot
- Scale insects
Track your Silk Tassel Bush care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun to full shade; ideal against a sheltered north or east-facing wall.
Garrya is one of few flowering shrubs that tolerates deep shade and north-facing walls. It also grows well in full sun provided it is sheltered from cold desiccating winds.
💧 Watering
Drought tolerant once established; water regularly in the first year.
Water newly planted specimens regularly throughout their first growing season to help roots establish. Mature plants are highly drought tolerant and rarely need supplementary watering except during prolonged dry spells.
🌱 Fertilizing
Apply a general-purpose fertiliser once in spring.
Garrya is not a hungry plant. A single application of a balanced general-purpose fertiliser in early spring is sufficient; established plants on reasonable soils often need no feeding at all.
✂️ Pruning
Lightly trim to shape after catkins fade in spring only.
Prune immediately after the catkins drop in spring — never in autumn or winter, as catkins form on the previous year's wood. Restrict pruning to removing dead, damaged, or wayward shoots and lightly shaping; hard pruning is resented.
❄️ Overwintering
Fully hardy to -15°C; no winter protection needed in UK gardens.
Garrya is fully hardy across the British Isles. No fleece or frost protection is required. Planting against a sheltered wall naturally shields the catkins from the worst of cold, drying winds, which improves catkin quality and longevity rather than plant survival.
Growing Tips
Choose a male plant for the best catkins
Male plants produce the longest catkins — up to 35cm on the cultivar 'James Roof'. Female plants bear shorter catkins and decorative berries but are less showy in winter.
Plant against a sheltered north or east-facing wall
Garrya thrives in positions that suit little else: a shaded, sheltered wall protects the long catkins from strong winds and prevents them from drying out prematurely.
Prune only after the catkins fade
Catkins form on the previous year's growth, so pruning in autumn or winter removes next year's display. Wait until the catkins drop in spring, then trim lightly to shape.
Tough in difficult spots
Once established, Garrya tolerates poor soils, dry conditions, coastal salt winds, and deep shade. It is an excellent choice for north-facing walls where few other flowering shrubs succeed.
Pests & Diseases
Pest Scale Insects
Identification: Brown or grey waxy bumps clustered on stems and the undersides of leaves; sticky honeydew on foliage below.
- Scrub off light infestations with a stiff brush and soapy water in late winter.
- Apply plant-based insecticidal soap spray to young crawlers in late spring.
- Spray with a systemic insecticide labelled for scale on ornamental shrubs, following label instructions.
Pest Aphids
Identification: Clusters of small soft-bodied insects on shoot tips and new leaves in spring; leaves may curl or be sticky with honeydew.
- Blast off with a strong jet of water.
- Encourage predators such as ladybirds and lacewings by planting nearby nectar plants.
- Spray with insecticidal soap or neem oil.
- Apply a pyrethrin-based spray or a systemic aphicide labelled for ornamentals if populations are high.
Disease Leaf Spot Phytophthora spp. / various fungal pathogens
Symptoms: Irregular brown or tan spots on leaves, sometimes with a yellow halo; in severe cases leaves yellow and drop.
Treatment: Remove and dispose of affected leaves. Improve air circulation by opening up the plant with light pruning after flowering. Apply a copper-based fungicide if the problem persists.
Prevention: Avoid overhead watering. Ensure good drainage. Do not crowd the plant against a wall with no airflow.
Disease Root Rot Phytophthora cinnamomi / Pythium spp.
Symptoms: Sudden wilting and dieback of shoots despite adequate moisture; roots appear brown and mushy rather than white and firm.
Treatment: Improve drainage immediately — incorporate grit around the root zone if planting in clay. Remove and destroy badly affected plants. There is no reliable chemical cure once roots are extensively damaged.
Prevention: Plant in free-draining soil or add plenty of grit at planting. Never allow the root zone to remain waterlogged. Raised planting on a slight mound improves drainage against walls.
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