It's hard to imagine that Allium thunbergii and Allium sacculiferum could be so easily confused. It seems so obvious. Thanks, Mark, for such good identification photos. My A. thunbergii alba, from a forumist here, should begin blooming any day now.
Rick Rodich zone 4a. Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA
I have always thought of Alliums as spring and summer blooming bulbs, but obviously I have to reconsider that! Seems I have to make room for some in my garden . . . . Hope they tolerate some autumn rain :-\
Rogaland, Norway - with cool, often rainy summers (29C max) and mild, often rainy winters (180 cm/year)!
Note: Recent posts to Allium 2012 have been split off to create "Allium 2013" topic, follow it here:http://nargs.org/smf/index.php?topic=1305.msg22139
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com