I’ve had luck with spraying the leaves with vinegar - white, not apple cider. It’s a long term process --I’m on my 4th yr but each year less & less plants rear their heads in my garden. It goes without saying that you need to be careful of surrounding plants since vinegar is a great plant killer. Best to spray on a sunny day, and don’t except instant gratification, it may not look like the oxalis has been killed & you probably won’t notice, unless you think about it, that there are fewer plants than last year. My patience & presistence have rewarded me with less & less oxalis each year (and I live in pretty frost free Palo Alto Ca) so nothing else is killing the plants. Just digging the plants up doesn’t really get rid of them since it’s hard to get the bulb out. The “stolons" are next years bulbs. Oxalis obtusa & squirrels are the banes of my gardening existence. —erika enos-- On Jan 26, 2020, at 1:08 PM, Jane McGary <janemcgary@earthlink.net> wrote: > Does anyone know how to eliminate Oxalis obtusa? I brought it into my present bulb house by accident, presumably as dormant bulbs (or whatever their tiny storage organs are properly called) that had got into the tunics of bulbs I brought deliberately, or that were clinging to some pots. All subsequent attempts to control it have failed, even replacing quite a bit of the plunge material where it's growing. I was just weeding out the crowns and wondered if there's a point in its growth cycle when the dormant bulbs have produced growth, but when new bulbs are not present. There are white stolons dropping from the crowns, and perhaps these will produce next season's storage structures. Can anyone advise on this? > > Although attractive in flower, it's a real pest. Fortunately it's not winter-hardy outdoors here. Don't ever let it loose in a warmer garden! > > Jane McGary, Portland, Oregon, USA > > > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > http://lists.pacificbulbsociety.net/cgi-bin/… _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…