Dandelions are my favorite flower.
Yes, I know. Dandelions are a "weed". But they way I see it, the only difference between weeds and prize-winning roses is the amount of effort involved in raising them.
Dandelions are pretty. They're yellow and cheerful, and they're *really* easy to grow! When I was young, I ran an ongoing war with my father as I blew dandelion spores all over the yard he was striving to keep clear of everything but grass. When I finally got my own house, I encouraged the dandelions to take over.
I still have grass when it's not dandelion season. When they do bloom, they make a sea of yellow, followed by a season of spore-snow as I "plant" the next generation's crop.