Jim wrote: > I just would never recommend them to a mid western garden greenhouse Fair enough, but since there are many people on the list who don't necessarily have much experience with Oxalis, I'd like to add my two cents: I think the genus is far too diverse to make a blanket statement about its invasiveness. There are probably hundreds of Oxalis species. Some are notorious weeds. Some are so picky that they're almost impossible to grow in captivity. Most are somewhere in between. I live in a climate where Oxalis ought to be invasive, but most of the ones I grow won't persist in the ground and don't set seed. You just need to know which species you're dealing with. There are some species of Gladiolus that produce hundreds of rice grain offsets plus windblown seeds, and are therefore very likely to spread around in pots. But I wouldn't avoid the whole genus for that reason. Hope that doesn't sound like abuse, Jim. It's not meant that way. Mike San Jose, CA