Shirley's right about ligtu and how they pull themselves deep.. Anecdotes: a) in one of our sand beds after years of trying we find that we cannot get a shovel deep enough to remove all of the rhizome pieces b) even in a mostly clay soil seedlings have managed to go .8 to 12 inches deep. c) Years ago the UC Berkeley Botanical Gardens wanted to remove a large section devoted to ligtu and I'm not sure whether they ever succeeded entirely even with their expert staff hard at it. Roy >Roy, I would recommend putting them in very deep pots. They love to >go down,down,down. When they first come up again, I would recommend >pulling them out. It sounds cruel and unusual punshment, but they >seem to develop much sturdier underpinnings if given this treatment >in Pebble Beach, at least. You won't get the whole plant when you >pull, so don't worry about that. If you do find yourself with no >plants because of my advice, call and I'll send you some >replacements. Nothing special, but Alstroemeria ligtu plants for >sure. > Shirley Meneice