Australian Tree Fern

Australian Tree Fern - Cyathea cooperi

Cyathea cooperi

Cyathea cooperi is commonly called the Lacy Tree Fern, and is also known as the Australian Tree Fern. It has had a name change so the species is now correctly named Sphaeropteris cooperi so be aware. This is one of a number of Australian plants that are increasingly popular in the USA

The fronds of Cyathea cooperi are finer and more delicate that other Australian tree ferns so one of the common names ‘Lacy Tree Fern’ is also appropriate and it is also known as the ‘Man Fern’. This is a tall growing tree fern reaching 18ft (6m) in height and sometimes taller.

It also differs from C. australis in that it has a more slender trunk, again giving it a more graceful look. And Dicksonia antarctica with its soft trunk which is suited to cooler climates.

Australian Tree Fern Foliage
Australian Tree Fern Foliage

Although C.cooperi is naturally found in the warmer climate of New South Wales and Queensland it is well suited to many areas of California and will grow well in cooler climates however not in cold winter conditions.

Common Names

  • Coin Spotted Tree Fern, as when the fronds break of with age, they leave rounded make on the trunk.
  • Scaly tree fern as the spots can look like scales.
  • Lacy Tree Fern as the foliage is fine and lace like.
  • Coopers Tree Fern.

Two varieties besides the species are available

  • Brentwood which has lighter green fronds
  • Robusta which has darker fronds.

Looking for something smaller ? Try the Dwarf or Silver Lady Fern

How to Grow the Australian Tree Fern

This is a fast growing tree fern which makes it popular. It is naturally a shade loving plant so it does require a shaded position and moisture.

  1. Choose a frost free position with good soil and light shade.
  2. Prepare the soil well before planting by digging in compost and some aged cow or sheep manure.
  3. Plant at the same height the fern was in the container and provide some support in the form of a stake or guy ropes until the root system becomes established.
  4. Water in well and apply a good later of mulch. The mulch will help retain moisture as well as assist with root development.
  5. It is best not to plant beneath the tree fern with any plants that may compete with the root system.
  6. Regular applications of aged cow or sheep manure fertilisers will promote strong growth as well improve plant health.
  7. Renew the mulch every year, fertilize once a year, twice in areas with poor soil.
  8. Avoid heavy clay soils that can become water logged.
Australian Tree Fern Trunk or Stem
Australian Tree Fern Trunk

Can you grow the Australian Tree Fern in Containers?

Yes, and this is a great solution in colder areas, In containers treat them the the same way as in the ground, simply bring them indoors before the first frosts, and when you take them outdoors slowly acclimatising them to more light.

You will find that on a partly enclosed patio, protected from frosts they will grow in cooler climates.


Only from spores, the Australian Tree Fern does send out offsets.

Summary information

  • Botanical Name : Cyathea cooperi (syn. Sphaeropteris cooperi)
  • Common Name : Australian Tree Fern, Coin Spot Fern. Scaly Tree Fern, Man Fern.
  • Height : To 18ft (6m)
  • Spread : To 12 ft(4m) at crown
  • Position : Part shade
  • Soil : Humus rich well drained and moist.
  • USDA Zones : 11 – 12
  • Temperature Range  40°- 50°F (4°- 10°C) 20-25° F
  • Frost Tolerant : No