Height: 4′-6′ Spread: 4′-6′. Small gray-green, pinnately compound foliage gives a fine texture to this delicately aromatic, drought tolerant plant. Small white flower clusters in upright panicles appear throughout the summer. Blooms late into fall. During severe winters, may die to snow line, but will quickly grow back. Full sun. Plant Select® 2006. Zone 5.