[Worth1]

Originally Posted by bower

I thought with perennial green onions, like Hardy Evergreen, the flowering stalk will die (of course) but the side shoots will continue to live on and divide the next spring.
It is a different species, A. fistulosum.
http://www.highmowingseeds.com/organ...ing-onion.html

Looks like White Lisbon is Allium cepa, although it is also reported winter hardy in some cool zones, or planted in fall for a spring crop, no idea if it would survive after flowering. These haven't flowered, although they are two year old plants. Late last fall they bulbed up and then began to divide, so I separated the little ones and these are them now, in the garden.

Leeks are another one, very cool. After they flower, they form "pearls" underground around the stem, and those 'pearls' sprout up as new baby leeks. The flower stalk is dead, but the clones keep coming...

That clears things up.
Onions are so much like agave since they are related to each other.

Worth