The herb grows up to two feet in height, flowering on multi-branched stalks from June through October in either blue, red or white flowering types, depending on variety. Hyssop prefers light, well drained soil and full sun to part shade. Easily propagated by seeds sown in early Spring, or by division in Spring or Fall. If cuttings are taken, they prefer the partial shade areas to full sun, and will not take a dry soil. Besides being both useful and quite ornamental, Hyssop makes an excellent companion plant in the flower and vegetable gardens, especially among cabbage and grapes as it repels flea beetles and lures away cabbage moths.
Bees love it, as do butterflies and hummingbirds.
Beekeepers once rubbed their hives with hyssop, as well as juniper, fennel, and thyme, in order to encourage the bees to stay. Hyssop is well worth planting near a beehive simply for the fine flavor the pollens add to the honey. Harvest Hyssop by cutting the stems just before the flowers being to open, usually around August. Harvest only the green plant parts that are not woody. Hang the cut branches upside down in a warm, dark place.