Don't blink! This cute little shrub will grow to maturity and fill out within a couple seasons. Let's Dance ĦArriba! is one of the most prolifically flowering, fastest-growing reblooming hydrangeas we've seen! Its flower color is dependent on the soil pH, but no matter what type of soil you have, you can depend on brilliant color. Blooms look gorgeous well into fall, aging to soft mauve! Blooms on both old and new wood. Salt tolerant.