Flowering occurs between mid summer to mid fall. Deadheading will prolong the bloom time. Hummingbirds, butterflies, and bees devour their delicious nectar.
The fragrant foliage grows quickly to form a large, upright clump, but can be kept smaller by trimming it back in late spring. This plant grows larger and is perennial in warmer climates, but it should be treated as a reseeding annual in the north