Hardiness Zone: 4-9 Height: 75-115 feet; 23-35 metres Spread: 75-100 feet; 23-30 metres Sun: Full to part sun Water: Medium Wildlife: Small mammals readily feed on the nuts. Various insects such as aphids, moth caterpillars, and beetles feed on this tree. Bloom Colour: Yellowish-green Tolerates: Drought Culture: Prefers moist, well-drained, loamy or sandy soil. Noteworthy Characteristics: Black Walnut is a medium-sized tree with a generally straight trunk and open, round crown. It contains a chemical that kills many other plants living within its rooting zone. The leaves are compound and yellowish-green but turn yellow in the fall. Each leaflet is lanceolate, has a smooth upper surface, and is hairy underneath. The bark is light brown and is scaly, becoming darker and ridged with age. The flowers appear as catkins (male) and erect clusters (female). The female flowers give way to nuts encased in round, slightly hairy, green husks that mature to black.
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