Plant type: Perennial. Ideal Conditions: Average to moist condition, well-drained soil. Tips for Use: Mass planting for ground cover, plant in group for rock gardens and use as edger along walkway or borders. Zone: 4 to 9. Growth: Height: 12 to 24 inches. Spread: 12 to 18 inches. Bloom Season: June to July. Get showy tiny white pinkish bell-shaped airy flower panicle above foliage. Tags: Sun/Shade. Care & Maintenance: Should be cut back in late fall to prepare for winter. Apply thick mulch round the root zone to protect it if in an exposed winter location or colder microclimate. Cut back flower stems after flowering. Divide clumps every 3-4 years.