The sacred jimsonweed (Datura wrightii / meteloides) is the most perennial of the southwestern U.S. species and can get become a large sprawling monster when happy in cultivation. I'm not aware of it developing a geophytic root, though. To be reliably perennial, it needs tough love. The most perennial individuals I have observed, returning year after year, were at middle elevations (3,000-5,000 feet) in southeastern Arizona and West Texas where they freeze back to their roots every winter. Interestingly, "jimsonweed" is reportedly a corruption of "Jamestown weed." There is apparently at least one Datura species native to Virginia whose special properties were made known to the early colonists. Shawn Pollard Yuma, AZ -------------------------------------------- On Sun, 12/29/13, Aad van Beek <avbeek1@hotmail.com> wrote: Subject: Re: [pbs] Onward through the fog! - More Drivel and Trivia :-) To: "Pacific Bulb Society" <pbs@lists.ibiblio.org> Date: Sunday, December 29, 2013, 8:16 PM Leo wrote > We have several bulbs in the lower Sonoran Desert, including what we know as > Dichelostemma pulchellum, as well as Hesperocallis undulata. There are also Asclepias > and Datura species with undergound storage organs. Datura are mostly annuals and some of them can become very weedy. Never seen a datura with underground storage organ. Do you have a name and picture of such a datura. Aad _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/