← Bedfellow

Black Walnut

Juglans nigra

Valuable hardwood timber; produces juglone, allelopathic to many garden plants. Edible nuts; aromatic foliage.

Family

Juglandaceae

Type

tree

Lifespan

perennial

Height

75–100 ft

Spacing

75–100 ft apart

Light

sun, part shade

Soil moisture

moist

Soil pH

acidic, neutral, alkaline

Bloom

April, May

Bloom colors

yellow, green, brown

Wildlife value

songbirds, butterflies, larval host

Caterpillar hosts

~129 butterfly & moth species

Landscape uses

specimen

Native states

AL, AR, CA, CO, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, NC, NE, NH, NJ, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, VA, WA, WI, WV