Cyathea medullaris – Mamaku or Black Tree Fern

This native of New Zealand and adjacent islands grows to  20 m tall with fronds up to 6m long.  It’s name seems to link to the very dark appearance of the trunk caused by dark brown/black scales cover it and spread over the leaf stalks.  Our young specimen, just arrived from Bowden Hostas, has a long way to go before it reaches that size.Cyathea medullaris - a young frond

Our specimen is planted in the ‘Australia’ area of the tropical glasshouse in a mixture of compost from our grounds yard, plus sand, grit, orchid bark and Seramis granules to provide a rich organic soil that is both moisture retentive and free draining.

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About Alastair Culham

A professional botanist and biologist with an interest in promoting biological knowledge and awareness to all.
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