Extension Service publications from U.S. Land Grant universities. A publically available searchable database with links to full text. Covers a broad spectrum of agricultural topics.
IN PROGRESS OF PUBLICATION. Names, taxonomic relationships, distributions, and morphological characteristics of native & naturalized plants found in North America north of Mexico. Online version of the currently being published print series (QK110 F55)
Includes a plant photo gallery, plant profiles, recent media coverage of horticultural issues, extensive links section, and Tom Clotheir's Archive with abundant resources on gardening topics.
xtensive listing of online gardening publications published by NDSU.
Emphasis on cultivated plants and plant/seed sources, citations to science and garden literature, and links to websites and images. Provided by University of Minnesota Libraries
Searchable database of selected web pages, factsheets, and 2,583 high quality images depicting ornamental plants and accompanying pests and diseases. Produced by Ohio State University.
The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories
Searchable database of publications reporting on all aspects of turfgrass and its maintenance. Includes full text for many items. Produced the Turfgrass Information Center at Michigan State Univ, in cooperation with the US Golf Association.
Online cultivar database of daylilies including descriptions, photographs, and cultivar and hybridizer names.