While producing this substance benefits the black walnut tree by limiting competition, it harms other vegetation, causing yellowed, wilted leaves and ultimately death from being exposed to juglone.

With most trees, it’s best to let fallen leaves remain where they lie, but you can further reduce the concentration of juglone in the soil around a black walnut tree by keeping the area clean.

On this winter edition of ID That Tree, Purdue Extension forester Lenny Farlee uses black walnut and eastern cottonwood twigs to show you tips on how to identify native Indiana trees with alternative ...

Arboriculture students at Paul Smith’s College planted around 30 trees on Arbor Day, Friday — the largest mass planting of ...