I got my blackberry bushes as cuttings mailed to me from someone on here. Perhaps there is some one on here who can and will send some cuttings to you. My bushes are not good enough to take cuttings.@rancher hicks
I don't think you will need to do anything different using frozen berries. If there is excess water from frozen crystals of ice, it will cook off. Mmmm...gooseberry jelly. I would like to grow gooseberries here. My grandmother had them in Cincinnati years ago and always had a jar of gooseberry jelly sitting on the table at every meal. I can only find the plants through mail order ; no one local carries them. Many of the younger generation don't even know what they are. Some day I will get some...