Tigridia species have true bulbs rather than corms. I believe this is true for all New World irids with "bulb-like" rootstocks. Corms are the rule in Old World genera. Dylan Hannon On 22 July 2012 18:32, Peter Taggart <petersirises@gmail.com> wrote: > Tigridia pavoniana can withstand both wet Winters and wet Summers in the > ground in Britain - (zone 7 or 8), as well as prolonged freezing > conditions. I know of some CORMS planted many years ago, against a wall and > shelterd by a cherry tree, which flower about every second year.. I would > not say that they do well, but they can survive winter moisture.... > Tigridias have corms not bulbs. if you half one, and half a dutch (or > reticulata) Iris bulb you will see the difference. Use a Crocosmia or > Gladiolus corm if you cant spare a Tigridia > Peter (UK) > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > -- "*Reason is itself a matter of faith. It is an act of faith to assert that our thoughts have any relation to reality at all.*" ~ Gilbert K. Chesterton