Cordyline is a genus of approximately 24 species of woody, monocotyledonous flowering plants in the family Asparagaceae (subfamily Lomandroideae), order Asparagales. The genus name derives from the Greek kordyle, meaning "club," a reference to the characteristically enlarged underground stems and rhizomes.
Plants range widely in stature — from compact cultivars of 3–6 feet to towering tree-like specimens reaching 40 feet — and develop woody stems topped by rosettes of strap-like, arching or erect leaves. Foliage colour spans bright green through deep purple, burgundy, pink, and variegated combinations, making Cordyline one of the most visually diverse genera in tropical and subtropical horticulture. The plants are broadleaf evergreens with a medium growth rate.
In season, Cordyline produces fragrant, small flowers in loose panicles during spring to summer; colours include yellow, whitish, and mauve. Fruit are fleshy berries that ripen to blue, purple-black, or red.
The genus is native to the western Pacific — centred on New Zealand, eastern Australia, southeastern Asia, and Polynesia — with a single outlier species, Cordyline sellowiana, occurring in South America from Bolivia through Brazil to northern Argentina. Species are widespread in cultivation far beyond their natural range, valued both as garden specimens and as indoor houseplants. Cordyline is also deeply embedded in the traditional cultures of Maori, Pacific, and Melanesian peoples, who used the plants for food, fibre, and spiritual boundary markers.
Etymology
The genus name Cordyline is derived from the ancient Greek word kordyle, meaning "club." The reference is to the distinctively club-shaped or enlarged underground stems and rhizomes that characterise many members of the genus. The name was applied by Philibert Commerson and formalised by the Scottish botanist Robert Brown (Comm. ex R.Br.).
Distribution
Cordyline is centred on the western Pacific. Its core native range spans New Zealand, eastern Australia, southeastern Asia (including parts of tropical Asia), and the Pacific islands of Polynesia and Melanesia. The single South American member, Cordyline sellowiana, extends the genus's natural distribution from Bolivia and Brazil south to northern Argentina.
Beyond its native range, Cordyline is widely cultivated in tropical, subtropical, and warm-temperate regions worldwide. It is particularly successful in coastal climates and performs well in USDA hardiness zones 9a through 11b. Some species, notably C. australis, have naturalised in mild oceanic climates such as parts of the British Isles.
Ecology
Cordyline species thrive in well-drained soils and are tolerant of coastal exposure and wind. They favour loam or sandy substrates with a neutral pH (approximately 6.0–8.0) and are drought-tolerant once established. Cold, wet soils present a significant risk, as prolonged waterlogging can cause rhizome rot.
The genus produces flowers that attract bees. Fleshy berries (blue, purple-black, or red) are presumably dispersed by birds, consistent with the frugivore-dispersal syndrome common across its Pacific island range.
Cultivation
Cordyline is widely grown as an ornamental for its dramatic foliage. Plants suit USDA hardiness zones 9a–11b and tolerate light frost; Cordyline australis can survive short-term temperatures as low as −10 °C in sheltered positions. They perform in full sun or partial shade, though some cultivars are noted as full-sun intolerant; ideal conditions offer 2–6 hours of light.
Preferred soil is well-drained loam or sand at neutral pH. Maintenance requirements are low overall; established plants are drought-tolerant but cold wet soils risk rhizome rot. Plants are suitable for borders, containers, and indoor cultivation.
Popular garden cultivars include 'Purple Dazzler' (dark purple-black leaves), 'Zumba' (bright pink leaves with cherry-red margins), 'Tana'/Renegade (dark purple foliage on 5-foot stems), and the compact Fountain™ series (2–3 feet, grass-like habit). The plants are toxic to cats and dogs and may cause contact dermatitis in humans.
Propagation
Cordyline can be propagated by several methods:
Seed: Pre-soak seeds for approximately 10 minutes, then sow in late winter or early spring at around 25 °C; germination takes 1–3 months.
Stem cuttings: Cut 5 cm sections of mature stem and place approximately 3 cm deep in a heated propagation frame with peat-based medium.
Suckers: Remove basal suckers in early spring and plant in situ or into pots once rooted.
Divisions: Divide established clumps and pot or direct-plant after allowing them to settle.
Root cuttings are also a recognised approach, alongside standard seed sowing.
Cultural uses
Cordyline has a long history of use across the Pacific. Among the Maori of New Zealand, the rhizome of Cordyline australis (ti kouka) was cooked in an earth oven (hāngī) to release its stored sugars; the trunk pith was also dried and steamed to make porridge or sweet drinks, and young shoots served as a vegetable. Roots and stems contain substantial fructose, with yields reportedly comparable to sugar beet; the species has been assessed as a minor global crop for carbon farming and industrial fibre.
Leaf fibre is strong and versatile: historically used by Maori and other Pacific peoples for twine, cloth, baskets, rain capes, and thatching material. Summer-harvested leaves can also be processed into paper pulp.
In the Papua New Guinea highlands, the leaves of Cordyline fruticosa are tied to sticks to demarcate taboo areas where special language must be observed during karuka (Pandanus nut) harvest — a use reflecting the plant's spiritual and social significance in Melanesian cultures.
Taxonomy notes
Cordyline is placed in the family Asparagaceae, subfamily Lomandroideae, within the order Asparagales, class Liliopsida. The genus was described by Philibert Commerson and published by Robert Brown (Comm. ex R.Br.).
Species counts vary slightly by authority and date: Plants of the World Online (POWO) recognised 23 accepted species as of July 2025, while GBIF lists the name as accepted with approximately 64 total descendant taxa (including synonyms and infraspecific names). The GBIF backbone (last interpreted August 2023) records the usage key 2766216.
The genus has historically been placed in Agavaceae or treated within a broadly circumscribed Liliaceae; its current placement in Asparagaceae reflects molecular phylogenetic work that reorganised monocot families in the early 21st century.
