Invasive. When a gardener tells you a plant is invasive, and asks you if you still want it, you should think carefully before you jump up and down and say yes, please, I've got lots of room. I'll take ten.
Trust me on this. Those tall flowers in the photo above? Aster tartaria. Beautiful purple blossoms with yellow centers, six or seven feet off the ground. The plants bloom in late September, making them a boon to perennial borders filled with plants that peak earlier in the season.
I started with ten aster tartaria plants. Now I have hundreds.
We've given away truckloads of them over the past two years. I love them, but maybe not quite so many.
In a few days, with a bit of sunshine in the weather forecast, my view out my office windows should be completely blocked by aster tartaria.
I don't know what these pink flowers are called. They show up in the garden every September.
I do know about the flowers in this last photo. Ted's favorite cosmos self-seeded from last summer, and now there's a sizeable cluster of plants in front of the stone wall behind our house.