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Hard treefern

Dicksonia squarrosa

Also called Rough Tree Fern, New Zealand Tree Fern, Whekī

Hard treefern
Photo: D-rew (talk), CC BY-SA 3.0

Dicksonia squarrosa, the New Zealand or rough tree fern (whekī), is a slow-to-establish but fast-growing tree fern native to New Zealand and the Chatham Islands, forming a slender black trunk topped by a few horizontal fronds. It needs cool, moist, sheltered conditions with shade from strong sun.

Family
Dicksoniaceae (Dicksoni family)
Grows as
Tree, Fern
Light
Part shade
Water
Keep the root zone consistently moist, especially in summer, and mist or water the crown in dry air.
Soil
Rich, humus-based, free-draining but moisture-retentive mix.
Temperature
10–25 °C; tolerates brief frost but protect below about -5 °C.
How easy
Moderate
Native range
New Zealand, Chatham Is.
Climate
subtropical

About

Dicksonia squarrosa, the New Zealand tree fern, whekī or rough tree fern, is a common tree fern endemic to New Zealand. It has a slender black trunk that is usually surrounded by many dead brown fronds.

Other Dicksonia plants

Soft Tree-fern · Golden Tree Fern · Imperial Samambaiaçu · Tree fern

Text excerpted from the Wikipedia article Dicksonia squarrosa 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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