Incrediball® Hydrangea ShrubThe Largest Hydrangea Blooms on the Market Why Incrediball Hydrangea Shrubs? With super strong stems for super sized blooms, the Incrediball Hydrangea Shrub is unlike any other variety available. In fact, the Incrediball delivers up to 80 giant blooms on both new and old wood, so it doesn't matter if you live in a tough climate with tough conditions. But despite their size, the flowers won't flop over. The Incrediball is famous for its reliable,