Marina Christopher is a trained botanist and an experienced and enthusiastic gardener. She co-founded the famous Green Farm Nursery, which specializes in hardy perennials, and now runs her own nursery, Phoenix Plants. Award-winning photographer Steven Wooster specializes in the photography of gardens and plants. He lives in London. Daniel J. Hinkley writes for numerous horticultural publications and is in high demand as a speaker throughout North America and Europe. He has been awarded the Scott Gold Medal, the Liberty Hyde Bailey Award, and the Veitch Memorial Medal, among others. He serves as chief consultant to Monrovia Nursery.