Terry,
To pot up my bench grafts for the summer I use 3 gallon pots, the
cheapest I can find, and a mixture of 3 parts peat, 1 part topsoil, 1
part sand, and a dash of lime. I've had great success with the
rootstocks staying alive, tho my grafting skill needs more practice.
I plant them in the nursery after the leaves have fallen. If the
graft fails, I keep the rootstock in the pot and overwinter it in the
garage. I try again the following spring.
Craig
Z5 Illinois
[NAFEX] Potting up grafted trees,
cevanko, 05/05/2011