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Buying as a Log

If you are buying a tree fern as a log, plant it as soon as possible. Depending on the size, it should be planted 20–25cm deep, or as much as needed to hold it upright securely.

Newly planted logs may need additional support until fully rooted. When fresh fronds emerge, they can catch the wind like a sail. If the plant rocks in the wind, it can hinder rooting and damage those young fronds.

Tree ferns perform best in a sheltered position, protected from strong winds and direct or full sun. This helps prevent excessive drying and scorching of the fronds.

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Early Life and Winter Care

Young tree ferns are more susceptible to cold and should, where possible, be kept frost-free during their first winter.

Tree ferns are evergreen and retain their fronds throughout winter. There is no need to remove fronds unless they are dead, as premature removal can weaken the plant. Fronds usually die back due to age, summer scorch, dehydration, or winter temperatures below -5°C to -6°C. When removing damaged fronds, cut a couple of inches above the base.

Because they are evergreen, tree ferns still require moisture during winter, particularly if kept undercover in a greenhouse or shed. They can suffer badly from dehydration if left dry. Water as needed, and placing a saucer beneath containers can help them draw moisture as required.

Tree ferns are generally hardy to around -8°C to -10°C. However, winter protection is recommended once temperatures drop to around -5°C to -6°C to prevent damage to developing fronds for the following season.

To protect the crown, pack it with straw, dried leaves, horticultural fleece or hessian. These materials allow moisture in while letting the plant breathe, helping prevent rot. In severe weather, tie the fronds upright and wrap again with fleece or hessian for added insulation.

Protection is typically applied in October or November and removed in late April or early May, once the risk of hard frost has passed. Local conditions and exposure will influence timing.

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