My experience in growing Dicksonia antactica and Cyathea australis is
that they do best in situations resembling their natural habitat. So
tropical treeferns should do best in warmer conditions. Young
Dicksonias certainly don't like 30 deg C unless there's a lot of
Seems that sowing them in a box covered permanently with a plastic and
sufficient wet soil will give them enough moisture.
Even on temperatures around 30 deg C. ;-)