Thanks John for that information. I will continue to keep this form under strict 'surveyance". There is probably a reason why it does not spread here. Generally it is found growing in the extreme southern regions of Italie ans Spain (much warmer then here). Are the flowers sterile? Greetings Lauw de Jager South of France http://www.bulbargence.com/ -----Original Message----- On the contrary: I have seen large spreads of double Oxalis pes-caprae in Portugal, for example, spreading freely by bulbils and being just as much an invasive nuisance as the single form.