Hi, Jay Yourch has just added some wonderful pictures of Asclepias tuberosa to the wiki: http://pacificbulbsociety.org/pbswiki/index.php/… California has something beautiful species of this genus and I'm wondering how many of them might be geophytes. A couple I have tried to grow in my garden, but haven't gotten to bloom yet are deciduous and late to come back in the spring. I've looked at least one of these when dormant and I could actually see something that looked like it had a tuber to me but Jepson describes them as annuals, perennials, or shrubs. There was a really gorgeous one I photographed in Southern California, Asclepias californica, described as perennial. I'd add it to the wiki if I thought is qualified. Mary Sue