Lamiaceae, native to North America.

Germination: Best sown indoors at 60-75° to a depth of 4 times the size of the seed. Expect germination in 20-25 days. Seeds can also be sown outdoors in spring or summer, up to two months before first frost. Seeds are very small.

Growth: Transplant when there are at least two sets of true leaves. Space 15-18 inches apart in full sun or part shade in a slightly acidic, rich, moist, well-drained soil. Plants vigorously spread by rhizomes and they will need dividing in winter or early spring before new growth begins. Staking is often necessary to keep flopping stems upright. A light, dry soil will check the plants from spreading too much and will induce stiffer, stronger stems.

Appearance and Use: Planted in borders and wildflower gardens; the flowers cut well for fresh use. The plants grow upright from 2-4 feet tall and vigorously spread. Individual flowers are 1 inch, snapdragon-like, and appear in 12-18 inch tall spikes in late summer and fall. Flower color can be white, purple, or rose. From the square stems arise the dark green, willow-like leaves.