nut variety
Thomas
Black Walnut · Juglans nigra
USDA hardiness range
- Zones
- 5a–8a
- Chill hours
- 700 to 1500 below 45°F
- Days to harvest
- 150 to 200
- Sun
- Full
- Water
- Moderate
- Lifespan
- 130 to 250 years
At a glance
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.
Growing Thomas
Detailed guidance for this section is being prepared. Check back soon.
Flavor, texture, and use
Detailed guidance for this section is being prepared. Check back soon.
Growing notes
Detailed guidance for this section is being prepared. Check back soon.
Thomas by zone
Zone-specific suitability, frost timing, and adjacent-zone notes.
Other black walnut varieties
3 sibling cultivars profiled on ZonePlant.
- Emma K
Bold, intensely flavored, very large kernels; baking and shelling. High kernel-to-shell ratio for a black waln…
- Sparks 127
Bold, classic black-walnut flavor, medium kernels; baking. Compact tree (40-50 ft mature) suitable for smaller…
- Sparrow
Bold, rich black-walnut flavor; baking and confections. Early-ripening selection that finishes before first fr…
Frequently asked questions
- What zones does the Thomas black walnut grow in?
Thomas grows in USDA zones 5a through 8a.
- How does Thomas compare to other black walnut varieties?
Thomas is one of 4 black walnut varieties profiled on ZonePlant. See the full black walnut variety table for side-by-side comparison.
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Image: "Juglans nigra nuts", by Gmihail at Serbian Wikipedia, via Wikimedia Commons, licensed under CC-BY Source.
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