Allium zebdanense
B K Earl (Sat, 21 Apr 2007 09:45:19 PDT)

I've been growing Allium zebdanense here in Zone 5 (30 miles west of
Chicago) in the shade garden for more than 10 years now. I do not mulch
the area. During this period we've experienced low temps ( -28 F) with
no discernible damage to the ever expanding clumps. I have noticed a
minute amount of self-seeding.

However, a friend in the same general area, has hundreds of these bulbs
in her very humus-rich 5 acre shade garden where they self-sow with wild
abandonment. Wish I could get mine to self-sow as much!

I have also seen them thriving at Boerner Botanical Gardens, in Hales
Corners, WI near Milwaukee.

Betty Earl
Naperville, IL
USA
Zone 5