I do limit mine to certain areas as it spreads and will reseed wherever it can. It's a wonderful filler and looks lovely in bouquets. After the teeny, tiny fuchsia-colored flower is finished on the stalk, I cut the stalks and put 'em outdoors where they shine for several weeks if you like that kind of a look. When it becomes too invasive, I ruthlessly pull them out to control it. I've never dried them but my guess is they'd dry very nicely.
Here is a close-up of a 'melted' spot...
Simply pull the 'melted' spots and throw it on the compost pile.
Stalks cut and in an aluminium bucket -
rugged looking but fits the outdoors.
This is not every one's kind of plant. I once had a yard man tell me they're the silliest kind of plants...
which simply put, means each man to their own! :) If you have a hot, dry area, this is your plant - it will prosper!