/ Photo by Stephanie Cavanaugh. Reviews from American Horticultural Society employees about American Horticultural Society culture, salaries, benefits, work-life balance, management, job security, and more. The American Horticultural Society By: The American Horticultural Society 2013_05_29_AHS-106 by The American Horticultural Society Front walk by The American Horticultural Society American Horticultural Society. The American Horticultural Society By: The American Horticultural Society. AHS’s River Farm headquarters in Alexandria, Virginia aims to be a national showcase for environmentally responsible gardening and horticultural practices. River Farm serves as the headquarters of the American Horticultural Society (AHS) and is situated on 25 acres of landscaped lawns and gardens. We ask that you follow a few guidelines to ensure everyone's enjoyment of this special place. Browse garden-themed art, books, tools and garden accessories. We ask that you follow a few guidelines to ensure everyone's enjoyment of this special place. Situated on 25 landscaped acres overlooking the Potomac river, it is an idyllic escape within the Washington, D.C. area. R iver Farm is the headquarters of the American Horticultural Society, located off the George Washington Parkway between Old Town Alexandria and Mount Vernon, overlooking the Potomac. The American Horticultural Society (AHS) is a nonprofit, membership-based organization that promotes excellence in American horticulture.It is headquartered at River Farm in Alexandria, Virginia. IMG_2328 by The American Horticultural Society IMG_2363 by The American Horticultural Society It was one of George Washington's five farms in Northern Virginia. Situated on 25 acres of landscaped lawns and gardens, River Farm is one of the Washington, D.C. area's premier gardening destinations. River Farm, Alexandria, VA. 2K likes. Shop for natives, specialty plants, edibles and much more. From its beautiful gardens, to its breathtaking view of the Potomac Rover, Riverfarm is truly a magically venue. River Farm, near Washington, D.C. is the headquarters of the American Horticultural Society with 25 acres of formal and natural gardens; FREE to visitors. The historic farmhouse at River Farm in Alexandria, Virginia, headquarters of the American Horticultural Society. Come experience the wonders of nature through our gardens. Each year, the American Horticultural Society (AHS) holds a popular two-day plant sale and garden product marketplace at its River Farm headquarters. I’m ready to support American Horticultural Society at River Farm on April 29, 2020 during Spring2ACTion. The event takes place at AHS’s River Farm headquarters on East Boulevard Drive in Alexandria’s Fort Hunt area. The event takes place at AHS’s River Farm headquarters on East Boulevard Drive in Alexandria’s Fort Hunt area.