Tree Indiana Native Juglans cinerea [Butternut] Juglans cinera is a large, rounded tree similar to, but overall smaller than the Black Walnut (Juglans nigra). It is not commonly grown for ornamental purposes. The nut, once one is able to crack the hard shell, is edible, sweet, oily, and buttery. Long tap root makes transplanting difficult. This species is valued for its wood and between overharvesting and losses from Butternut Canker (Sirococcus clavigignenti-juglandacearum), this species has become rare in its native habitat.
Tree Indiana Native Juglans nigra [Black Walnut] Nuts are a serious litter problem, staining sidewalks and driveways. Juglone (found in leaf litter and possibly roots) is toxic to many plants, like tomatoes, blackberries, red pines, and many others. Black Walnut wood is valuable and has a variety of commercial uses, especially for furniture.
Tree Juglans regia [Persian Walnut] Juglans regia is a large, rounded, spreading tree that produces the walnuts frequently seen in stores. It may take up to 20 years for this tree to become mature enough to produce a decent-sized crop of nuts. Long tap root makes transplanting difficult.