Hydrangeas for American Gardens by Michael A. Dirr; 2004. Hardcover.

The sheer number of choices among Hydrangea species, hybrids, and cultivated varieties can be overwhelming even for the most advanced gardeners. How to choose from among the hundreds of mopheads, climbers, lacecaps, and oakleafs, to name just a few? And how to care for hydrangeas in American gardens, when nearly all the books offering advice about them come from England and Europe? Respected plantsman Michael A. Dirr comes to the rescue in this refreshingly forthright and practical guide to these distinctive shrubs and climbers.