Hi, My friend Andrew Wilson once gave me a piece of one of the tuberous Pelargoniums and I was able to grow my own from it. I am wondering what parts of these can be grown on. I dug up a dormant one and there are lots of little pieces, but I know some tubers need a stem piece to grow on so that what looks like a root may not work. I was thinking of sending some of these to the BX if they can be grown on, but don't want to take the trouble if they can't. Mary Sue