I can add one more. Gladiolus papilio has gone wild through my garden spreading by root runners. At the end of each root there is a new bulb. Laura in Niagara On Sat, Dec 13, 2025, 10:41 PM Janet Hoffmann via pbs < pbs@lists.pacificbulbsociety.net> wrote: > I have spent the past couple seasons in my San Jose area, California > garden ripping out some Ferraria crispa that started going crazy after > about 3 years in the ground. I belatedly read that they are invasive in > Australia. > > I have also become careful to cut off the seed heads on Homeria, > Crocosmia, Allium unifolium, Amaryllis belladonna, Hyacintha hispanica. > Freesia laxa and Tulipa clusiana. This seems to keep them from spreading > beyond the clumps where they are planted. > > I had Oxalis purpurea in the ground for over 20 years before the clump > started spreading rather vigorously. They are now coming up in an area > across 20’ of concrete from the location where they were planted and I am > not sure if animals are spreading the bulbs being as I don’t see seeds on > them. > > The CA native Triteleia laxa can also spread rather vigorously from bulbs > offsetting, not from seed or animal dispersal. > > Having this discussion of potentially problematic plants and how people > keep them under control is helpful. > > Janet Hoffmann > Campbell, CA > > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > https://lists.pacificbulbsociety.net/cgi-bin/… > Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> > PBS Forum latest: > https://pacificbulbsociety.org/pbsforum/index.php/… > _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net https://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> PBS Forum https://…