Non-profit OrganizationsThis category is for all gardening-related non-profit organizations. Keywords: Advanced Search Directory View All Listings Add Listing List of Botanical Gardens and Arboretums in the United States Resource Name List of Botanical Gardens and Arboretums in the United States Rating (average) (1) A very useful Wikipedia page, listing arboretums and botanical gardens by state. The listings seem to be both non-profit and for-profit, public and private. Very nice descriptions also!
