Cyathea Medulliaris. Black Tree Fern. New Zealand tree fern. A beautiful, rare tree fern native to New Zealand. It has a jet black trunk covered in fine black hairs. The tallest of all the New Zealand Tree ferns. The fronds can reach over 5m long and the trunks can get up to 20m tall in their natural habitat, though rarely that height in northern climates. Needs protection over winter. Cyathea Medulliaris
Name: Cyathea Medulliaris
Approx. Height and spread: up to 20M x 10M
Position: Shade – part shade.
Soil Ph: Acid
Moisture: Moist, but well drained.
Hardiness: **Protect well over winter.