These elegant lacecap flower heads don't quit—because Twist–N–Shout blooms on both old and new wood, you may see flowers all the way through summer. The flowers aren't the only reason it makes a statement, though, the leaves become a striking burgundy in fall. Excellent for borders, containers and cut–flower bouquets. Blooms are pink in alkaline soil, and blue in acidic soil. Hydrangea macrophylla 'PIIHM–I'