Winter Garden Tips

Black Walnut

Juglans nigra
Juglans_nigra.jpg

Botanical Name

Juglans nigra

Hardiness

Zones 4 to 9

Height

50 to 75 feet

Width

Up to 50 to 75 feet

Flowers

Late winter or early spring.  Spiky flowers often overlooked and of limited ornamental value.

Fruit

Hard rough nut with a fleshy green covering.  Look like a tennis ball.

Fall Color

Yellow

Light

Full sun to light shade

Soil

Prefers moist fertile soils though tolerates dry, high pH and clay

Planting and Care

Transplant young seedlings in spring before growth begins or nursery-grown plants early in the season.

Problems

Anthracnose, leaf spot, juglone toxicity

Did you know?

BlackWalnutfruitThe green husks surrounding the black walnuts have been used to make stains and dye.  Wear gloves when handling these to avoid stained fingers.

Black Walnut is host to Banded Hairstreak butterfly larva.

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