The method I used was to cover the ground before they emerged with three layers of cardboard (old corrugated boxes) then mulched over that. I left it for the winter and as none of the tops could get through they died without setting new bulbs. On Sun, Jan 12, 2014 at 4:09 PM, Steven <hartsentwine.australia@gmail.com>wrote: > Hi John, I often use mulch to kill pest weeds, however I have this oxalis > in my garden by mistake & it thrives where I have mulch up to 6" thick.. > The only way you could eradicate it with mulch is if you continually lift > the mulch so the oxalis never received any sunlight what so ever... This is > a very difficult task because it will shoot & ramble quickly through the > mulch.. If it sees sun you will loose your battle so be vigilant !!! > You may be better to use a combination of spray & then mulch, but I have > found it very difficult to control & I started with only 1 plant.. > > Steven : ) > > On 13/01/2014, at 8:42 AM, John Wickham <jwickham@sbcglobal.net> wrote: > > > I was wondering if anyone has any experience using mulch to remove > Oxalis pes-caprae. > > pbs mailing list > > pbs@lists.ibiblio.org > > http://pacificbulbsociety.org/list.php > > http://pacificbulbsociety.org/pbswiki/ > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > --