Heck, it's in wikipedia.
Something it fails to mention in that article is that some of the old Blood Elves have kept the roses around "just in case" while other ex-blood elves do thheir part to destroy them wherever they see them. Apparently some ofthe Blood Elves would rather die than gothrough that again, while others wouldn't.
The point being, that stuff is around in the Shadowrun world if you want it.
-Frank