Plant Black Scallop Bugle Weed in well-drained soil with partial to full sun exposure. Space plants 12-18 inches apart. Water regularly to keep the soil consistently moist, especially during dry spells. Fertilize in early spring with a balanced, slow-release fertilizer. Trim back spent flowers to encourage new growth and maintain a tidy appearance. Divide clumps every 2-3 years in early spring or fall to prevent overcrowding and promote vigorous growth.