Posted: 17/09/2015 at 08:59
Tresco Purple is supposed to be hardy but you can still take cuttings.
The apricot one is probably not but in a mild winter it could get through
I stick mine in the ground any old how and some survive some don't.
I have found you don't need rooting powder.You could just dig up one plant and keep in a greenhouse over winter to be on the safe side.
p.s. I just love Osteospermums!!