Akeake hero image

Akeake

Dodonaea viscosa

Not Threatened

Introduction

Dodonaea viscosa is a hardy shrub or small tree native to New Zealand, known for its resilience in coastal and exposed environments. It is valued for its attractive purple-tinged foliage, tolerance of poor soils, and ability to withstand wind and salt spray. The plant is often used for shelterbelts, hedges, and ecological restoration projects. native trees

Akeake (<i>Dodonaea viscosa</i>)

Image credit: Akeake (Dodonaea viscosa). Wikipedia

Quick Facts

Overview

Scientific Name Dodonaea viscosa
Height 2–7 m (occasionally up to 10 m)
Spread 2–4 m
Water Needs Low to moderate; drought tolerant once established
Light Full sun to partial shade
Frost Tolerance Moderate; hardy to about -5°C
Salt Tolerance High; tolerates coastal conditions and salt spray
Growth Rate Fast
Lifespan Long-lived (decades)

Climate & Conditions

Native Range

Akeake is naturally found in coastal and lowland areas throughout New Zealand, particularly in drier eastern regions. It's a pioneer species that colonizes disturbed sites, rocky areas, and forest margins.

Preferred Conditions

  • Sun Exposure: Thrives in full sun but tolerates partial shade.
  • Wind Tolerance: Exceptional resistance to strong winds, including salt-laden coastal winds.
  • Temperature Range: Hardy to about -5°C. Young plants may need protection in hard frosts.
  • Rainfall: Drought tolerant once established, though responds well to occasional deep watering during prolonged dry spells.

Adaptability

Akeake is renowned for its adaptability to challenging sites, making it ideal for coastal gardens, exposed positions, and poor soils. It's particularly valuable in areas where other plants struggle to establish.

Map: Akeake is found throughout New Zealand, especially in drier eastern regions.
City Suitability
Whangārei Ideal
Auckland Ideal
Hamilton Ideal
Tauranga Ideal
Rotorua Ideal
Gisborne Ideal
New Plymouth Ideal
Napier Ideal
Whanganui Ideal
Palmerston North Ideal
Wellington Ideal
Nelson Ideal
Christchurch Good
Dunedin Moderate
Invercargill Marginal

Growing & Maintenance

General Care

  • Watering: Water regularly until established, then only during prolonged drought.
  • Feeding: Generally not required, though a light application of slow-release fertilizer in spring can promote vigorous growth.
  • Pruning: Responds well to pruning and can be shaped as desired. Prune in late winter or early spring.

Maintenance Level

Low maintenance once established. Occasional pruning to maintain shape and remove any damaged branches is all that's typically required.

Growing Requirements

Akeake thrives in a wide range of soils, including sandy, rocky, and poor soils, as long as drainage is good. It prefers full sun but tolerates partial shade. Once established, it is highly drought and wind tolerant, making it ideal for exposed and coastal sites. Mulch young plants to conserve moisture and suppress weeds. Avoid waterlogged conditions, as Akeake does not tolerate poor drainage.

Plant Ecology

The ecology of Dodonaea involves its interactions with other species and its role in ecosystem processes. Understanding these relationships helps in conservation and cultivation.

Ecological Interactions

Akeake interacts with various native birds, insects, and other plants, contributing to the overall biodiversity of New Zealand's ecosystems.

Environmental Adaptations

The plant has evolved various adaptations to survive in challenging environments, including drought tolerance and resistance to salt spray.

Uses & Significance

Akeake is especially valued for its use in shelterbelts and ecological restoration. Its timber is prized for durability.

Seasonal Care

  • Spring: Prune to shape, apply mulch, and check for new growth
  • Summer: Water young plants during prolonged dry periods
  • Autumn: Plant new specimens, enjoy colorful seed capsules
  • Winter: Protect young plants from severe frost if needed
Spring: Prune and mulch
Summer: Water if dry
Autumn: Plant new specimens
Winter: Protect from frost

Pruning

Pruning Techniques

Prune Dodonaea viscosa in late winter or early spring to maintain shape and encourage bushiness. Remove any dead, damaged, or crossing branches. Regular trimming is recommended for hedges and screens.

Planting Guide

  1. Choose a sunny, well-drained site
  2. Dig a hole twice as wide as the root ball
  3. Mix compost into poor soils if needed
  4. Plant at the same depth as in the container
  5. Water thoroughly after planting
  6. Mulch to retain moisture, keeping away from the trunk

Propagation

From Seed

  1. Collect seed when capsules turn reddish-brown but before they open.
  2. Dry capsules in a paper bag to catch seeds as they release.
  3. Sow fresh seed in a well-draining seed-raising mix.
  4. Keep moist and in a warm position.
  5. Germination typically takes 2-4 weeks.

From Cuttings

  1. Take semi-hardwood cuttings in late summer or autumn.
  2. Dip in rooting hormone for best results.
  3. Place in a free-draining propagation mix.
  4. Keep humid but not wet until rooted, usually within 6-8 weeks.

Cultural History

Akeake was highly valued by Māori for its extremely hard wood, used to make tools and weapons. The name 'Akeake' means 'forever and ever,' reflecting the timber's durability. Early European settlers also used the wood for tool handles and machinery parts.

Akeake holds cultural significance for Māori as a symbol of strength and endurance, and its wood was used for tools and weapons.

Pests & Diseases

Common Pests

  • Scale Insects: May occasionally infest stems and leaves. Control with horticultural oil if severe.
  • Aphids: Can affect new growth. Usually controlled by natural predators.

Disease Prevention

  • Root Rot: Avoid waterlogged soils to prevent root diseases.
  • General Health: Ensuring good air circulation helps prevent fungal issues.

Akeake is generally very resistant to pests and diseases, making it a low-maintenance addition to most gardens.

Growing Tips

Create a stunning color contrast in your garden by planting the purple-leaved form of Akeake (Dodonaea viscosa 'Purpurea') alongside plants with silver or golden foliage. Good companions include Corokia 'Frosted Chocolate', Libertia peregrinans (for its orange-toned foliage), and Astelia chathamica (for silver contrast). This combination works particularly well in coastal gardens where these hardy natives will thrive while creating year-round visual interest through foliage contrast rather than relying on seasonal flowers.

Species Information

Dodonaea belongs to the Sapindaceae family and is one of the most widespread and adaptable native shrubs in New Zealand. This species is found throughout the country and is particularly common in coastal and lowland areas.

Taxonomy

Family: Sapindaceae
Genus: Dodonaea
Species: viscosa

Distribution

Found throughout New Zealand, particularly in coastal areas, forest margins, and disturbed sites. Also occurs in Australia and other Pacific regions.

Natural Habitat

Akeake is naturally found in specific habitats throughout New Zealand. Understanding its natural environment helps in providing appropriate growing conditions in cultivation.

Plant Companions

Discover other native plants that complement Akeake in your garden. These plants share similar growing conditions and create beautiful, sustainable landscapes.

Conservation

Akeake is not threatened but can be affected by habitat modification. It is valued for its durable timber and wildlife habitat.

Conservation Status

Akeake is not currently threatened and is widespread throughout New Zealand. However, protecting its natural habitats and promoting its use in gardens helps maintain genetic diversity.

Conservation Actions

Individuals can contribute to conservation by:

  • Growing Akeake in gardens and restoration projects
  • Supporting native plant nurseries
  • Participating in habitat restoration efforts
  • Educating others about native plant conservation

Soil and Growing Requirements

Akeake thrives in a wide range of soils, including sandy, rocky, and poor soils, as long as drainage is good. It prefers full sun but tolerates partial shade. Once established, it is highly drought and wind tolerant, making it ideal for exposed and coastal sites. Mulch young plants to conserve moisture and suppress weeds. Avoid waterlogged conditions, as Akeake does not tolerate poor drainage.

Landscaping Uses

Dodonaea is highly valued in landscaping for its aesthetic appeal and practical benefits. It can be used in various garden styles and landscape applications.

Garden Applications

  • Windbreaks and shelterbelts
  • Hedges and screens
  • Coastal gardens
  • Native plant gardens
  • Restoration projects
  • Drought-tolerant landscapes

Design Considerations

Consider the plant's mature size, growth rate, and maintenance requirements when incorporating it into landscape designs. Its adaptability makes it suitable for challenging sites where other plants may struggle.

Ecological Role

Dodonaea plays an important ecological role in New Zealand's native ecosystems. It provides habitat and food for native wildlife and contributes to ecosystem health and biodiversity.

Wildlife Habitat

Akeake provides valuable habitat for native birds, insects, and other wildlife. The dense foliage offers shelter and nesting sites, while the seeds are an important food source for various bird species.

Ecosystem Services

The plant contributes to soil stabilization, particularly in coastal and exposed areas, and helps prevent erosion. Its deep root system helps improve soil structure and water infiltration.

Succession and Restoration

As a pioneer species, Akeake plays a crucial role in ecological succession, colonizing disturbed sites and creating conditions suitable for other native plants to establish.

Care and Maintenance

Regular care and maintenance will keep Dodonaea healthy and thriving. This includes proper watering, feeding, and monitoring for any issues.

Watering Requirements

Akeake is drought-tolerant once established, but young plants benefit from regular watering during dry periods. Water deeply but infrequently to encourage deep root development.

Fertilization

Generally not required, but a light application of slow-release fertilizer in spring can promote vigorous growth in poor soils.

Pruning and Shaping

Responds well to pruning and can be shaped as desired. Prune in late winter or early spring to maintain shape and encourage bushiness.

Pest and Disease Monitoring

Monitor for common issues and address promptly to maintain plant health and appearance.

Requirements

Akeake has minimal requirements and adapts well to challenging conditions. This hardy native thrives in coastal and exposed environments.

Soil
Well-draining, tolerates poor soils
Light
Full sun to partial shade
Water
Low to moderate once established

Plant Description

Physical Characteristics

Akeake (Dodonaea viscosa) is a hardy, evergreen shrub or small tree that typically reaches heights of 2-7 meters (6-23 feet), occasionally growing up to 10 meters in ideal conditions. The plant is characterized by its distinctive foliage, which consists of simple, alternate leaves that are typically 3-8 cm long and 1-3 cm wide.

Dodonaea exhibits distinctive characteristics that make it easily identifiable in its natural habitat. Its growth habit, leaf structure, and seasonal changes all contribute to its unique appearance and ecological role.

The leaves are lanceolate to elliptic in shape with smooth margins and a glossy, sticky surface that gives the plant its specific epithet "viscosa." The foliage color varies from bright green to dark green, often with a purple or reddish tinge, particularly in new growth and during cooler weather.

The plant produces small, inconspicuous flowers in spring and summer, followed by distinctive winged seed capsules that are initially green but mature to a reddish-brown color. These capsules are a key identifying feature and provide food for native birds.

Understanding these physical characteristics helps gardeners and conservationists identify the plant correctly and provide appropriate care. The plant's form and features also make it valuable for landscaping and restoration projects.

Planting Section

Planting Requirements

Akeake (Dodonaea viscosa) is an excellent choice for challenging sites where other plants struggle to establish. This hardy native shrub is particularly well-suited for coastal gardens, exposed positions, and areas with poor soil conditions.

Proper planting techniques are crucial for the successful establishment of Dodonaea. Taking time to prepare the site and follow best practices will help ensure the plant thrives in its new location.

Consider the plant's mature size and growth habit when selecting a planting location. This planning helps avoid future problems and creates more sustainable, low-maintenance landscapes.

Site Selection

Choose a location that accommodates the plant's needs:

  • Full sun to partial shade exposure
  • Well-draining soil (tolerates poor soils)
  • Protected from severe frost for young plants
  • Adequate space for mature size (2-7m height, 2-4m spread)
  • Consider its use as a windbreak or hedge

Soil Preparation

Prepare the soil to meet the plant's requirements:

  • Test soil drainage and amend if necessary
  • Add organic matter for very poor soils
  • Ensure pH is neutral to slightly acidic
  • Remove competing vegetation
  • Loosen soil to a depth of 30-40cm

Planting Procedure

Follow these steps for successful establishment:

  1. Dig a hole twice the width of the root ball and slightly deeper
  2. Place the plant at the same depth as in the container
  3. Backfill with native soil, firming gently
  4. Water thoroughly after planting
  5. Apply mulch around the base
  6. Stake if needed in windy locations

Establishment Care

During the first growing season:

  • Water regularly until roots establish (6-8 weeks)
  • Protect from severe frost if necessary
  • Remove competing weeds
  • Monitor for signs of stress or disease
  • Apply light fertilizer in spring if growth is slow