Coprosma Robusta

Coprosma robusta

Common Names: Karamu, Shiny Leaf Coprosma
Family: Rubiaceae
Origin: New Zealand (endemic)
Plant Type: Evergreen Shrub / Small Tree

Overview:

Coprosma robusta is a fast-growing, upright New Zealand native shrub or small tree known for its shiny green leaves, reddish stems, and ecological value. One of the earliest native colonising species, it is widely used in revegetation, riparian planting, and native restoration projects. Tough and adaptable, it also performs well in large gardens or shelterbelts.

Key Features:

• Foliage: Large, glossy, deep green leaves with a leathery texture and reddish midribs

• Flowers / Fruit: Small tubular flowers (spring) followed by bright orange-red berries in autumn, attractive to birds

• Form & Habit: Upright, bushy to open form; can develop into a small tree

• Growth Rate: Fast

• Cultural & Ecological Value: Excellent nurse crop and bird food source; important in native ecosystem restoration

Mature Size:

Ideal Growing Conditions:

Landscaping & Garden Uses:

• Native revegetation and ecological restoration

• Riparian or wetland margins

• Shelterbelt or privacy screening

• Large native gardens or wildlife plantings

• Background shrub for mixed plantings

Care & Maintenance:

• Pruning: Can be pruned to shape or limit height; otherwise requires little maintenance

• Watering: Moderate; tolerates seasonal wetness and dry spells once established

• Feeding: Not usually required in native soils

• Pests & Diseases: Generally pest- and disease-free; root rot possible in poorly drained soils

• Additional Tips: Avoid overly exposed or dry windy sites when young

Fun Fact / Botanical Insight:

Coprosma robusta, or karamu, was traditionally used by Māori for medicinal purposes and is one of the most common and important native nurse species in regeneration plantings due to its resilience and rapid growth.

Why Choose Coprosma robusta?

Robust by name and nature, Coprosma robusta is a keystone plant for native restoration and revegetation. Its fast growth, wildlife value, and tolerance to a wide range of conditions make it a must-have for ecological plantings and large-scale landscaping.