Why Do Bulbs Bloom When They Do?
Judy Glattstein (Thu, 15 Jun 2006 13:10:54 PDT)

I've been asked by one of the staff librarians at the New York Botanical
Garden's Library why some bulbs flower in the spring and others bloom in
the fall. (I didn't bother to point out to her that there's a third
subset of summer-blooming bulbs.)

I'm not sure what the answer is. Does anyone have good information as to
why bulbs bloom when they do?

Judy in New Jersey where the previous deluge has given way to days of
clouds and sun. Dracunculus vulgaris is in bloom. Now that's a funky one!