Hatch's Perennials 2017-18: Genera U to Z

Hatch's Perennials is being revised with new cultivars, images, historical scans, and other useful information for the perennial expert, collector, breeder, grower, and curator alike. This June 2017 revision covers cultivars in the genera Uncinia, Uvularia, Vancouveria, Valeriana, 389 Verbena cultivars, Vernonia, 146 Veronica cultivars, Veronicastrum, 69 Vinca cultivars, Viola, Wahlenbergia, Waldsteinia, Woodwardia, Xanthoceras, and 97 modern Yucca cultivars.