Black Walnut plant profile
Juglans nigra
A perennial fruit for full sun.
Last updated .
When to plant
When to plant Black Walnut
NC State Extension says black walnut has a very deep taproot that makes it difficult to transplant, so it is best established young. It gives no planting date; set out dormant bare-root stock in early spring while the soil is workable.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Black Walnut in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Lifecycle
- Perennial
- Spacing
- 600 to 840 in apart
- Hardiness
- Zones 4a to 9bFind my hardiness zone
Common problems
Watch for these
Also watch for: thousand cankers disease, bacterial blight, walnut caterpillar, juglone toxicity to other plants.
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Juglans nigra (Black Walnut)
NC State Extension. Supports general reference. Checked 2026-06-18.