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Corkwood tree

Duboisia myoporoides

Also called Corkwood, Eye Opening Tree, Yellow Basswood, Corkwoodtree, Eyeplant, Hard Corkwood, Poison Corkwood

Corkwood tree
Photo: John Moss, Public domain

Corkwood (Duboisia myoporoides) is a shrub or small tree from New Caledonia and the rainforest margins of eastern Australia, valued for its thick corky bark and alkaloid-rich leaves. It grows best in mild, moist conditions with good drainage and is best kept in a sheltered spot in the garden.

Family
Solanaceae (Nightshade family)
Grows as
Tree, Shrub
Light
Part shade, Bright indirect
Water
Keep soil evenly moist during growth and let the top layer dry slightly between waterings.
Soil
Moist, well-drained loam or a peaty potting mix.
Temperature
15–30 °C; protect below 5 °C
How easy
Moderate
Safety
Toxic: All parts contain tropane alkaloids such as hyoscine (scopolamine) and hyoscyamine, which are poisonous if eaten.
Edible
Yes, some parts
Native range
E. Australia, New Caledonia
Climate
subtropical

About

Duboisia myoporoides, or corkwood, is a shrub or tree native to New Caledonia and to high-rainfall areas on the margins of rainforest in eastern Australia. It has a thick and corky bark.

The leaves are obovate to elliptic in shape, 4–15 cm long and 1–4 cm wide. The small white flowers are produced in clusters. This is followed by globose purple-black berries (not edible).

Uses

The leaves are a commercial source of pharmaceutically useful alkaloids. The same alkaloids render all plant parts poisonous. The leaves contain a number of alkaloids, including hyoscine (scopolamine), used for treating motion sickness, stomach disorders, and the side effects of cancer therapy.

Text excerpted from the Wikipedia article Duboisia myoporoides by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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