Dicksonia antarctica - soft tree fern, man fern,
                     Tasmanian tree fern

Dicksonia antarctica is, without a doubt, the best known and most commonly cultivated of all 
the tree ferns, grown for its great beauty and cold hardiness.
Native to Australia and Tasmania. Trunk development is quite slow, about 1" a year,
potentially attaining a great height. It produces spores at the age of about 20 years. 
Hardy to about -7C lower with protection.