Corokia Macrocarpa

Corokia Macrocarpa (Corokia macrocarpa)

Common Names: Coastal Corokia, Wire-netting Bush
Family: Argophyllaceae
Origin: Endemic to the Chatham Islands, New Zealand
Plant Type: Shrub

Overview:

Corokia macrocarpa is a hardy, coastal shrub prized for its striking wiry framework and silvery-grey foliage. Its unique, almost sculptural form and salt-tolerant nature make it a standout feature in coastal gardens, modern landscapes, and native plantings. The plant adds year-round texture and architectural interest, particularly during the winter months when its intricate branch structure is fully visible.

Key Features:

Foliage: Soft, silvery-grey leaves with a subtle sheen; evergreen in mild climates. The foliage provides a fine texture that contrasts beautifully with bolder-leafed plants.

Flowers/Fruit: Small, star-shaped yellow flowers appear in spring to early summer, lightly scented and attractive to pollinators. These are followed by small, red to orange berries in autumn, which offer seasonal color and food for birds.

Form & Habit: Naturally upright and somewhat open with a tangled, zig-zagging branch pattern; can be shaped through pruning for a denser form.

Growth Rate: Moderate

Cultural or Ecological Value: Native to the remote Chatham Islands, Corokia macrocarpa plays a vital role in coastal ecosystems and supports local bird and insect populations. Its drought and salt tolerance make it ideal for sustainable landscapes.

Mature Size:

Ideal Growing Conditions:

Frost Tolerance: Yes – Hardy to around -5°C (23°F)

Landscaping and Garden Uses:

• Screening / Hedging: Can be pruned into dense, structured hedges

• Coastal Gardens / Windbreaks: Excellent for exposed sites due to salt and wind tolerance

• Native or Restoration Planting: Ideal for ecological plantings or to support native biodiversity

• Containers / Patios / Small Gardens: Suited to pots for architectural accent or minimalist design

• Feature Shrub / Specimen Planting: Eye-catching form makes it ideal as a focal point

Care and Maintenance:

Pruning: Can be pruned lightly in late winter or early spring to maintain shape or encourage density. Can also be sculpted into topiary forms.

Watering: Minimal once established. Water regularly during establishment phase (first 1–2 seasons), especially in dry climates.

Feeding: Apply a balanced, slow-release fertilizer in early spring to encourage healthy growth.

Pests and Diseases: Generally pest- and disease-resistant. Monitor for scale or aphids in stressed plants.

Additional Tips: Mulch in summer to retain moisture and suppress weeds. Pairs well with flaxes (Phormium), grasses, and other coastal natives.

Fun Fact or Botanical Insight:

Corokia macrocarpa is one of the few shrubs endemic to the Chatham Islands and is specially adapted to the harsh, windy, salt-laden conditions of its native coastal habitat. Its name “macrocarpa” refers to its relatively large fruit compared to other Corokia species.

Why Choose Corokia Macrocarpa?

With its sculptural form, drought resilience, and year-round appeal, Corokia macrocarpa is an excellent choice for low-maintenance gardens, coastal plantings, and native landscapes. Whether you're looking to create structure, support biodiversity, or add a modern, architectural element, this unique shrub delivers versatility and impact.

Pot Size:

These are our standard size in 7cm square pots.