Cyathea australis

Origin : South East Austrailia and Tasmania

Common Name : Rough Tree Fern

Hardy scale : Hardy to no more than -8 Celsius (for short periods) 

A superb Tree Fern from the forests of Southeast Australia (and Tasmania and Norfolk Island) comes this medium to large sized tree fern. In the wild it inhabits moist mountain areas in Victoria, New South Wales, and Queensland, and is often found growing in the company of Dicksonia antarctica but preferring more sunny open spots. 

Cyathea brownii

Dicksonia antarctica

Origin : South East Australia & Tasmania

Common Name : Soft Tree Fern

Hardy scale : Hardy to -10 celsius and will defoliate around minus 6 taking into account other factors such as wind chill factor and aspect. Needs to be protected at temperatures below -6 celsius.

Dicksonia fibrosa

Origin: New Zealand

Common Name: Golden Tree Fern, Maori: Wheki-Ponga

Hardy scale : Hardy to -8 Celsius for short periods of time 

This is a smaller species of the Dicksonia genus from New Zealand (North Island, South Island and Chatham Island) that looks almost like a miniature of Dicksonia antarctica.

Dicksonia sellowiana

Origin : South America

Common Name :  Xaxim

Hardy scale : Hardy to around -6 Celsius  

This tree fern from South America (from southern Mexico all the way down as far as Uruguay) can now be rated hardy along with lines of Dicksonia antarctica and Dicksonia fibrosa.

Dicksonia squarrosa