Horticulture: Websites

Membership information, local societies, and the Rose of the Month, and, American Garden Rose Selections

Events including the annual Garden Tour; news, and education for professional landscape designers in Oregon and Washington

Certification of landscape designers; link to Oregon chapter; search for a designer. Current issue of The Designer Magazine available to read online.

A nonprofit organization that certifies farms and ranches and food handlers (including packers, processors and distributors) for sustainable agricultural and business practices

Volunteer organization, for professional and amateur gardeners alike. The organization has a library available for members. Lots of events are listed.

ISA provides certification for Arborists. Links, events, resources for tree care professionals

Nonprofit trade organization for the Nursery industry in Oregon. News, events, scholarships.

Gardening information from the regional Extension Service, at Oregon State University

Botanical garden of Pacific Northwest plant species, located in Silverton, Oregon.

Works to preserve native plants, and for habitat conservation in Oregon; provides field research grants.

Browse collections of botanical images.

Identify common broadleaf trees and conifers with this guide from Oregon State University

Data and photos of Pacific Northwest flora. Managed by the University of Washington Herbarium.

Gardens from around the world. Reviews, and blog.

Gardens of the world; forums and information files for gardeners.

Part of The Nature Conservancy's response to abating the damage caused to native biodiversity by the human-facilitated introduction of non-native, harmful invasive species. This website provides many resources designed to help all conservationists deal most effectively with invasive species

Oregon State University. Department of Horticulture. Over 1700 plants are identified.

Landscape and plant identification sources

Oregon Department of Agriculture (ODA), Noxious Weed Control. Western US invasive Plant EDRR (Early Detection and Rapid Response) Guide.

Includes newsletter, links to Rare Plant guide, Oregon Plant Atlas, Vascular Plant Checklist

Plant distributions across Oregon. Search by common or scientific name

Links and advice for the local climate

Browse Order/Family taxa; many photos.

National Resources Conservation Service, USDA. Search by state. Lists available include noxious weeds, plants endangered in the United States.

Browse alphabetical list from the Backyard Gardener.

Over 1,700 digitalized micrograph images from more than 250 species of plants collected from all over the world.

Database of phylogenetic knowledge