With some 270 species, "Penstemon" is the largest genus endemic to North America, with examples to be found in every state in the continental U.S. Penstemons are particularly beloved by rock gardeners, but as Panayoti Kelaidis points out in his foreword, they belong in every garden, since "one penstemon or another will thrive in virtually any microclimate a garden can contrive, from hot, desert exposures to dank shade."

Fresh from his award-winning monograph on penstemons, Robert Nold turns his attention to one of the best-loved - and most frequently misunderstood - groups of garden plants. "Columbines: Aquilegia, Paraquilegia, and Semiaquilegia" is the first gardener's guide to these striking plants in more than half a century; and in his funny, personal, and charming prose, Nold makes sense of the thorniest taxonomic and horticultural questions they present. Sixty-five species of Aquilegia receive detailed examination, with a complete summary of cultivation needs, history, and biology. The author also describes plants of the genera "Semiaquilegia" and "Paraquilegia," cutting through confusion and dissension to create a useful overview of these "columbine cousins." Nold also provides a brief history of hybridization, and practical chapters on propagation and pests and diseases round out the book. In addition to beautiful paintings by the author's wife, celebrated botanical artist Cindy Nelson-Nold, the book also boasts several dozen exquisite photos of columbines in the wild and in gardens.

A must-have for any gardener facing the daunting challenge of scorching summers and brutally cold winters. A black-and-white edition.