The Perks of Poison Ivy? - Friends of Wissahickon Friends of Wissahickon

#8220;Leaves of three, let them be.” While poison ivy isn’t the only three-leaved plant out there – box elder, blackberries, and raspberries are all often confused with it – it’s […]

In Praise of Poison Ivy: The Secret Virtues, Astonishing History

Wissahickon Creek Facts for Kids

Wissahickon's study pits man against Angora goats - WHYY

Poison Ivy, DC Animated Universe

Friends of the Wissahickon - Idealist

Trail ambassador, 81, obsessed with Wissahickon Park

Wissahickon's study pits man against Angora goats - WHYY

Organic – Eating for the Ecosystem – Applied Research and Education

Organic – Eating for the Ecosystem – Applied Research and Education