Colchicum in cold climates
ds429@comcast.net (Fri, 27 Jul 2012 12:44:40 PDT)

I have a lot of colchicums that thrive here in Zone 6/7. Among them are cultivars of C. autumnale as well as C. agrippinum, C. bivonae, and C. speciosum. They are all listed as being hardy in Zone 4 if the drainage is good. Mine grow with the shoulders of the bulbs only 2-3 inches below the soil. If one wanted to grow them in Zone 4 or colder, would deeper planting make them less vulnerable to the cold? Would they tolerate deeper planting?

Advice would be appreciated,

Best wishes,

Dell

Dell Sherk, SE Pennsylvania, USA
_______________________________________________
pbs mailing list
pbs@lists.ibiblio.org
http://pacificbulbsociety.org/list.php
http://pacificbulbsociety.org/pbswiki/