Tulips require a period of cold temperatures in winter to induce flowering. In Houston they might not be getting enough winter cold. I suppose you could dig them up and store them in the refrigerator (that is what bulb merchants do for bulbs sold in the South) for a few months. _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/