By state

Public gardens in Washington

22 Washington botanical gardens and arboretums, each mapped and typed.

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Bellevue Botanical Garden — Washington

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Bloedel Reserve — Bainbridge Island, Washington

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Bonhoeffer Botanical Gardens — Washington

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Carl S. English, Jr., Botanical Gardens — Washington

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Elisabeth C. Miller Botanical Garden — Shoreline, Washington

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Heronswood — Washington

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Highline Botanical Garden — Washington

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Hulda Klager Lilac Gardens — Washington

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John A. Finch Arboretum — Washington

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Kruckeberg Botanic Garden — Shoreline, Washington

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Lake Wilderness Arboretum — Washington

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Manito Park and Botanical Gardens — Spokane, Washington