Hello, I have several of these smaller plants growing in my wildflower bed. They seem to be annuals but do re seed themselves. Not as plentiful this year as last however. I adore them because they have such a nice but unusual fragrance. I cannot find anything in my garden books like them. I would appreciate any information anyone may have. They grow on a red colored stem and are in bloom now which is July/August. We live in Ohio. The shape of the leaves do remind me of verbena plant leaves. Thanks!