Tansy is one that must be grown in pots, it's everywhere before you realize it if you aren't careful. But it's also good to grow around a sitting area because it keeps the mosquitoes away. If you remind me later, I'll send you some when it wakes up again, but you have to promise you'll plant it in pots. I love the plant, the blooms are great and the foliage is greater, but oh boy, it does take over. I have it growing beside one of my Rose of Sharon trees and also beside the rose 'Carefree Beauty', and though I sometimes get a JB infestation they never get anywhere near the tansy, so the rose and the ROS have no problems. Same is true of everything else that grows near the tansy.
And it stinks to high heaven actually, but only if it's broken or otherwise disturbed. The regular scent of the blooms isn't something to write home about, but when it's broken, the scent is not nice at all.
