Aboaut Pacific Coast Hybrids, I believe someone said they were tricky to transplant and it seemed to work best during fall rains. I grow over 100 of these and we are friends with the leading hybridizer of these. In the fall we split them never letting them dry out and keep them in water 1-7 days until they have grown a few new roots before putting in the ground. The new white roots usually grow very fast and sometimes are ready to be planted the next day but don't let them dry out at all and keep them watered the first month until the rains take over. Here in Calif that may take a bit of watering. Using this method you will seldom lose any. Carolyn in Los Gatos, CA northern end about 30 minutes inland