Hydrangea macrophylla 'BloomStruck', part of the Endless Summer® Collection, is another breeding breakthrough. After 50 days below 0° F, and a low of -28° F, BloomStruck® flowered heavily the following spring on old growth and put out loads of blooms on new growth. In addition to being cold tolerant, BloomStruck's glossy dark green leaves are more heat resistant, which prevents wilting in mid-day heat. This reblooming mophead has rounded flowers averaging 3.5 - 5" across in intense rose-pink, violet or blue, depending on pH levels. Flower heads are held upright on striking ruby red stems, and burgundy red fall foliage. Bloom time: summer *color dependent on soil pH Light: part sun to part shade Soil: well drained, regular garden soil Spacing: 4 - 5' Height at maturity: 3 - 4' Pruning: late winter/ early spring Zones: 4 - 9 Images are used for general reference only. The size, shape, bloom time and leaf color of each plant will vary. This plant is not available for purchase online. Please call or visit the store for purchase.