Let's Dance Can Do! hydrangea ( H. macrophylla × serrata ) is an excellent rebloomer, requiring only a short period of vegetative growth in order to create new wood blooms. However, it has another trick up its sleeve: it sets its flower buds along the entire length of the stem, not merely at the tips. This means that if this hydrangea is cut back, or damaged by cold temperatures, those lower old wood buds will still develop into flowers. It's a huge leap forward in achieving success with hydrangeas for landscapers, home gardeners, growers, and retailers alike. Abundant, semi-double, star-like florets make the lacecap flowers very showy.