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Reference.org
American Horticultural Society
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<p>The American Horticultural Society (AHS) is a nonprofit, membership-based organization that promotes American <a href="/facts/Horticulture/m8qBLuT3">horticulture</a>. It is headquartered at <a href="/facts/River_Farm/lYckfp2U">River Farm</a> in <a href="/facts/Alexandria%2c_Virginia/GLS42Yf4">Alexandria, Virginia</a>. </p>