Posted: 01/03/2012 at 18:37
EASY! Heucheras do have a short life (in my experience 2, maybe 3 years before that happens. I have only ever bought one each of every variety I own (about 10?) and have loads of plants of each variety now. In the Autumn I cut off little plantlets from the outside of the plant, make sure the cut is clean and put them in a mix of approximately half compost, half gritty sand. I just leave them standing around outside in the winter and find that at least 33% have rooted in late spring/early Summer. I just judge them ready to pot up when they've started growing. A year and a half later the plant is very big and will have loads of new 'plantlets' to start all over again. Some varieties obviously work better than others, I have not had much luck with the black ones, but the caramel-type colours are very successful indeed. Hope you don't become as obsessed with propagating them as I am!