gwharton wrote: Unfortunately I do not have a clue as to its growth habit. Does anyone out the have experience with this species.
Thanks in advance for any comment
Nothofagus antarctica has been for the most part limited in avaliablility to the specialty nurseries of the Pacific Northwest and is found more often on the West coast of the US from Seattle to LA. It is a large shrub or small tree (30-80 feet) but most often found as a low shrub that is native to the very southern portions of Argentina and Chile in South America as far as Tierra del Fuegoas. It lives in the higher elevations in what is called the diminishing rainforests which makes it rather hardy and should be able to be grown in US growing Zones 5-6 and above in the open ground. Where it fits botanically has been changed over the years once being in the Beech family (Fagaceae), then in the Birch Family (Betulaceae) but was assigned it's own family ranking of (Nothofagaceae) in 1962.
From a bonsai perspective it should perform quite well and because of it's smaller leaves should make a quite fine small to medium sized tree. From my experience, it does back bud quite well and doesn't exhibit branch die back like that found in Birch. As it's name implys (notho - meaning false) it's roots are not as tempermental as Beech so you should have no problem with root pruning or getting a nice fine root system. Because of its shrubby nature you should also be able to ramify branches tightly with appropriate pruning during the active growing season. Repotting should probably be done every 3 years in the very early spring just as the buds begin to swell or the roots show activly growing white tips.
Hope that helps,
p.s. We would love to hear and see your progress on this tree and add it to our reference libary of images when it's done