I have a friend in London who grew the on his allotment, with great success. He gave them a lot of compost. I only have Oxsalis tuberosa as a greenhouse weed which I struggle to control though Petyer (UK) On Thu, Nov 10, 2011 at 5:00 PM, MARK MAZER AND FREDRIKA MAZER < markmazerandfm13@earthlink.net> wrote: > The new cultivars are much better, fewer oxalates and sweeter. >