Rodger's advice is very good. It really does depend on where you live. But I do think having a note on the wiki of what can be a problem in certain climates is very helpful. I'm very fond of Oxalis convexula which has succulent leaves and is very dainty, but don't usually have any to share with the BX and it certainly isn't weedy for me like it is for Andrew. But when I've had Oxalis make small babies like Andrew described, I've tossed them quickly. Oxalis obtusa shows up in a lot of my pots, but hasn't returned in the few experiments I made of growing it in the ground even though Lauw suggests doing this would not be a good idea. I don't know why it didn't do well in the ground when it can be pest in pots, but I have found that not every South African winter rainfall bulb does well growing in my garden. Some only survive in pots. alas. Oxalis purpurea which Diana Chapman once suggested would make a nice lawn is one in my Northern California garden that once planted out is difficult to get rid of. But I imagine in colder climates it might not return. And a friend who works in a garden setting said it depended on the variety whether of not it did too well in the ground. Oxalis pes-caprae is a menace in the wild where I live and in many other parts of the world, but probably not everywhere. The legacy bulb pages on the wiki list plants that Kathleen Sayce found in her research had naturalized. Puttting all that information on the wiki took me many months and I didn't transfer the information she found to the genus wiki pages for the species she found as I didn't have time. That job is open for anyone who wants to volunteer to do it. Mary Sue Mary Sue Ittner California's North Coast Wet mild winters with occasional frost Dry mild summers