identifyingplants:

Juglans nigra // Black Walnut

• Grows in moist, organically rich, well-drained soils in full sun. Intolerant of shade. Typically found in woods, valleys along streams and in open upland woods. Drought tolerant.
• Zone 4-9.
• Native to the Eastern United States
• Oval to rounded crown
• 75-100’
• Leaves:  Odd-pinnate ,compound leaves  up to 24” long. 13-23 oblong to lanceolate leaflets.
• Flowers: Male flowers in drooping hairy catkins and female flowers in short terminal spikes.
• Fruit: Female flowers give way to nuts, each being encased in a yellow-green husk. Edible.
• Bark:  Fissured, sharply ridged, dark gray-black. Forms diamond patterns.
• Good shade tree.

(Information from the Missouri Botanical Garden website.)