Hello Jim, I concur with Roland, planting between 15-20 cm (6-8") has many advantages: cooler conditions give less splitting, too low for mices to eat therm, (yes it is more difficult to harvest the corms). Even at that depth in claysoil, you will be surprised how the shoots will get to the surface. Another point: the leaves of Crocus sativus are very frost resistence: no problems with -10° C (??°F) I during the 20 years I grow them here I never experienced any frost damage of the leaves and the corms. Greetings Lauw de Jager South of France http://www.bulbargence.com/ -----Original Message----- If I planted Saffron 15 cm deep in my heavy clay I doubt that I’d ever see them again. This or 30 cm (!!) might work in sand, small gravel or loose loam, but not in my heavy clay. _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/