Prunella is a member of the mint family, so that tells us immediately that it is a vigorous, spreading plant.
There’s one plant that self-seeds all over my yard that I pull up whenever I see it, even when it is in flower.
There is something very satisfying about seeing second-generation plants from self-sown seeds!
For bouquets, cut the goldenrod before the buds open, when they last well and no pollen is released.
Callicarpa americana makes a good hedge on the outskirts of a garden, as well as excellent ornamental focal points in borders.
These so-called thugs are plants that cover the ground so fast that if left to their own devices they eventually crowd out every other plant in a bed.