The RHS Plant Finder and RHS Plant Selector combined into a single Find a Plant service, searching over 250.000 plant records. RHS Find a Plant is the standard bearer of the plant source genre published by the Royal Horticultural Society in Britain. Considered an authority for nomenclature, the Plant Finder also relates additional information such as if a plant won an award, has doubled flowers or which classification the plant belongs to within its type (e.g. a damask rose is designated with a “D”). Also available in print, this resource is useful simply for its reference value, even if you don’t plan to start importing plants.
Keyword: Database
Bean’s Trees and Shrubs
An online version of Trees and Shrubs Hardy in the British Isles by W J Bean published by the International Dendrology Society.
Western Washington Flora
University of Puget Sound’s Western Washington Flora is a database of Western Washington plant species featuring photographs, Latin and common names, and species notes. The featured searches are particularly useful, listing plants found in common habitats, ranges, and elevations.
CABI Compendium Invasive Species
Centre for Agriculture and Biosciences International (CABI) provides a detailed coverage of invasive species threatening livelihoods and the environment worldwide and it includes an Invasive Species Discovery Tool.
NatureServe Explorer
An impressive database of information for over 70,000 species of plants and animals and ecosystems of the United States and Canada. NatureServe is a non-profit conservation organization that provides the scientific information and tools needed to help guide effective conservation action. Data includes conservation status, distribution and economic attributes.
Center for Invasive Species Plant Management
The Center for Invasive Species Management (CISM) developed an online Restoration Resource Database to allow land managers to search for literature, books, handbooks, and web sites on restoration, particularly related to invasive species. CISM is by June 2015 no longer in operation, and the website now serves as an archive of the agency’s projects and resources.
International Organization for Plant Information Global Plant Checklist
“Managed by the International Organization for Plant Information (IOPI), the Global Plant Checklist (GPC) is a cooperative international project designed to help humanity manage the earth’s biodiversity efficiently and sustainably. This prototype for IOPI’s Global Plant Checklist Project demonstrates how the Checklist works, and serves as an aid for developing data entry and botanical editing procedures.”
International Association of Plant Taxonomy: Generic Names in Current Use
“Fill in the empty field in order to query the database for a specific genus name.”
American Forests National Register of Big Trees
Provides information on some of the biggest known trees in the United States. American Forests invites you to send pictures and dimensions of some big trees you’ve encountered.
findmyroses.com
This site will help you locate that rose, peonies and clematis you’re looking for. They have information for over 45,000 varieties and species, many with sources.