Vervain is a great addition to any garden! For shaded areas, blue vervain (Verbena hastata) can do reasonably well, though it prefers full sun. Make sure the soil is well-drained, as they don't like soggy conditions. As for uses, many gardeners appreciate vervain for its pollinator-friendly flowers. Medicinally, it’s often used in herbal teas for relaxation, but always ensure you research or consult with an expert before using it that way. Happy gardening!