A fast-growing Australian native tree fern with a slender trunk marked by coin-shaped frond scars and a wide canopy of large, lacy fronds. A quick lush feature for shaded subtropical gardens.
At a glance
- Plant type: Fern
- Mature size: 6 m H × 4 m W
- Aspect: part shade or morning sun and shade and low-light positions
- Water: consistently moist soil
- Frost: tender
- Maintenance: low maintenance
- Origin: Australian native
About Rough Tree Fern
Cyathea cooperi is a fast-growing fern in the Cyatheaceae family, native to Australia. It reaches around 6 m tall and 4 m wide at maturity, with evergreen foliage.
Where to grow Rough Tree Fern
Rough Tree Fern suits subtropical and warm-temperate climates and grows best in part shade or morning sun and shade and low-light positions. It is frost tender, so protect it from hard frosts or grow it in a sheltered spot or pot.
Soil & planting
Rough Tree Fern does best in free-draining soil. Dig in plenty of compost before planting, water in well, and mulch to keep roots cool.
Watering & feeding
Rough Tree Fern is consistently moist soil. As an Australian native, feed it only with a low-phosphorus native fertiliser. In its first year, water deeply once or twice a week to settle the roots in, then taper off as it establishes.
Pruning & care
Tip-prune Rough Tree Fern in spring to maintain a dense, shapely habit. Overall it is low maintenance.
Using Rough Tree Fern in the garden
Rough Tree Fern earns its place for a feature or specimen planting and a shade tree.
Companion planting & design
For a cohesive, low-care bed, pair Rough Tree Fern with other plants that enjoy the same consistently moist soil and subtropical climate. Group three or five together for impact rather than dotting single plants through the garden. It combines naturally with other Australian natives in a habitat or water-wise garden.
Good to know
It is regarded as non-toxic and pet-safe.
Buying Rough Tree Fern
Plant Sale lists Rough Tree Fern as potted plants and advanced specimens. Stock isn't live yet — register your interest using the panel above and we'll email you the moment it is available.