Hydrangea macrophylla 'PIIHM-I', also known as Endless Summer® Twist-n-Shout®, this re-blooming hydrangea has lace-cap with pink or blue blooms. Foliage is a glossy green with a burgundy-red fall color. Blooms on new and old wood for continuous flowers all summer. Moderately salt tolerant and prefers well drained soils.