Walnut
Walnut is a fruit in the Juglandaceae family. It grows best in full sun with medium moisture, and is listed for USDA zones 4-9.
Varieties
1 · sorted by days to maturity▸Walnut
PROPAGATION CATEGORY: Nut tree (grafted) (not currently in seed catalog). Use: Edible nut; black walnut also for timber. Note: English walnut (J. regia) zones 5-9; black walnut (J. nigra) zones 4-9. Roots release juglone, which is toxic to many garden plants nearby.
Walnut (Juglans regia, English; J. nigra, black) is a large, long-lived nut and timber tree. Grown from grafted stock or seed. Roots and leaves produce juglone, an allelopathic compound that harms many nearby plants. Hardy zones 4-9.
Growing notes: Botanical name: Juglans regia|Hardiness zones: 4-9|Propagation: grafting/seed|Sun needs: Full sun|Water needs: Medium|Mature height: 40-60 feet (black to 100 ft)
Plan your walnut planting
Add walnut to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.
Start your free plan →At a glance
Storing & preserving
Refrigerate ripe fruit; ripen firm fruit at room temperature.
- Freeze: Freezes well raw; spread on a tray first so pieces stay loose.
- Preserve: Make jam or water-bath can high-acid fruit.
- Dry: Dehydrate or air-dry, then store airtight away from light.
General home-preservation guidance — for tested processing times and safety, follow the National Center for Home Food Preservation.
Growing timeline
Care & troubleshooting
No curated care & troubleshooting advice for walnut yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.