Mountain Cabbage Tree

Botanical name: Cordyline indivisa
Synonyms: Dracaena indivisa, Dracaenopsis indivisa, Cordyline hookeri, Cordyline hectori
Common name(s): Tōī, Broad-leaved Cabbage Tree, Mountain Cabbage Tree

About:
Cordyline indivisa is a striking New Zealand endemic cabbage tree distinguished by its exceptionally broad blue-green leaves and compact flower clusters that emerge from beneath the foliage rather than above it. Unlike the familiar cabbage tree, it usually forms a single stout trunk with few branches and is a characteristic species of cool montane forests and subalpine valleys.

Natural habitat:
Montane forests, subalpine shrublands, valley heads and sheltered gullies in cool, moist environments.

Growing environment:
Prefers cool, moist, fertile soils in sheltered positions with partial shade or filtered sunlight. Performs best in cooler climates and struggles in hot, dry lowland areas.

Endemic distribution:
Endemic to New Zealand. In the North Island it occurs from the southern Hunua and Coromandel ranges southwards, becoming common from the Raukūmara Ranges and Central Volcanic Plateau southward. In the South Island it is widespread through the western and northern regions and more local in the drier east.

Height:
4–8 m

Width:
2–5 m

Flowering:
(November–) December–January

Fruiting:
January–May

Uses:
Traditional weaving material, ornamental specimen tree, forest restoration planting, wildlife habitat and cool-climate landscaping.

Appearance:
A stout, palm-like tree with a massive usually solitary trunk up to 80 cm in diameter and a crown of broad, arching leaves. The broad sword-shaped leaves are 1–2 m long and 10–15 cm wide, blue-green above and glaucous beneath, with a broad, prominent midrib often coloured red, orange-red or yellow near the base. Old leaves persist around the crown forming a skirt beneath the foliage. Flower clusters are dense and compact, arising from beneath the leaves rather than extending beyond them. The flowers are creamy white to pale purple and faintly fragrant. Fruits are small, globose and bluish to dark blue when ripe.

Ecology:
Flowers attract insects and the fleshy berries are dispersed by birds. The species is an important component of wetter montane forests and subalpine ecosystems, particularly on the West Coast of the South Island.

Associated habitats:
Montane podocarp forest, southern beech forest, subalpine scrub, valley head seepages, gullies and cool forest margins.

How to grow:
Plant in cool, moist, sheltered conditions with protection from hot afternoon sun and drying winds. Keep soils consistently moist and rich in organic matter. Avoid prolonged heat or drought.

Propagation:
Easily grown from fresh seed. Young plants establish best in cool climates and shaded situations. In warm lowland regions plants often fail to reach maturity before declining.

Cultural use:
The broad leaves were highly valued by Māori for weaving rain capes and other garments, being considered superior to other Cordyline species for this purpose due to their width and durability.

Garden value:
An outstanding architectural specimen for cool-climate gardens and native plant collections. Its bold foliage and distinctive mountain character make it one of New Zealand’s most impressive native monocots, although it can be challenging to grow successfully in warm regions.