ZonePlant
Thomas black walnut

nut variety in zone 6a

Thomas black walnut in zone 6a

Thomas · Juglans nigra

Zone
6a -10°F to -5°F
Growing season
180 days
Chill needed
700 to 1500 below 45°F
Days to harvest
150 to 200

The verdict

Detailed guidance for this section is being prepared. Check back soon.

About Thomas

Bold, intense, distinctively earthy black-walnut flavor; baking (cookies, cakes, ice cream), fudge. The heritage productive variety, large nuts with thicker shells than English walnut. Self-fertile but better with a partner.

Critical timing for zone 6a

Detailed guidance for this section is being prepared. Check back soon.

Common challenges in zone 6a

  • Brown rot in stone fruit
  • Japanese beetles
  • Spring frost damage to peach buds

Modified care for zone 6a

Detailed guidance for this section is being prepared. Check back soon.

Thomas in adjacent zones

Other black walnut varieties for zone 6a

Frequently asked questions

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Will Thomas black walnut grow in zone 6a?

Yes. Thomas is recommended for USDA zones 5a through 8a, which includes zone 6a.

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Are there enough chill hours in zone 6a?

Black Walnut needs 700 to 1500 chill hours. Zone 6a typically meets this range; check local microclimate against historical chill totals to confirm.

Image: "Juglans nigra nuts", by Gmihail at Serbian Wikipedia, via Wikimedia Commons, licensed under CC-BY Source.

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