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Stark® Black Gem® Walnut

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Perfect for lovers of black walnuts. This variety produces huge crops of light-colored, high-quality, delicious nuts that crack in large segments and offer a superior nutmeat-to-shell ratio. Thin husks slip off easily, without the usual mess. Matures to be 40 to 60 feet tall. Heat-tolerant. Ripens in late September. Grafted. Self-pollinating. Juglans nigra


Bloom Color Green, Yellow
Distance To Pollinator 75 - 250'
Fruit Color Brown
Fruit Size Medium
Pollination Self-pollinating
Ripens/Harvest Late September
Shade/Sun Full Sun
Soil Composition Loamy
Soil Moisture Well Drained
Soil pH Level 6.5 - 7.0
Taste Flavorful
Texture Crunchy
Years to Bear 4 - 5
Zone Range 5 - 9

Zone Compatibility

This Variety's Zone Range 5 - 9
My Hardiness Zone ?
The USDA hardiness zones offer a guide to varieties that will grow well in certain climates. Each zone corresponds to the minimum winter temperatures experienced in a given area. Make sure that your hardiness zone lies within the zone compatability range of this variety before ordering.


This variety is self pollinating.

In many cases, you may still want to plant pollinating partners to increase the size of your crops, but with self-pollinating varieties doing so is optional. You'll get fruit with only one plant!

Tools & Supplies

Having the proper tools and supplies when growing your own can make the difference between a good harvest and a great harvest! Here's a list that our experts recommend for this variety.


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Questions & Answers

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Browse 2 questions Browse 2 questions and 6 answers
Why did you choose this?
Stark Bro's Store
Love black walnuts
Rhonda B on Apr 7, 2016
Love black walnuts
Rhonda B on Apr 7, 2016
how well do they stand up to a hurricane?
j f on Jan 16, 2018
BEST ANSWER: Black Walnut trees are quite hardy when they are planted in their proper zone. It takes a little bit to get the roots established. The wood of Black Walnut trees is strong but quite elastic so if you have a nice healthy established Black Walnut tree that is thriving and a hurricane comes, I think the tree will weather it nicely.

Customer Reviews

4.5 / 5.0
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Black Gems
I purchased this tree a year ago and it is doing great. Very happy with the time that it took to get it and the size that it was. Planted it and have had no problems. Can't wait till it is big enough to start producing.
May 10, 2017
over 3 years ago
Two years
I planted this on a hill with some big tree around it. It grows great almost 5 feet tall with nice branches and leaves.
May 15, 2017
over 4 years ago
Stark Black Gem Walnut
we received a very strong tree and after the winter it seems to be doing well.
February 23, 2016
over 4 years ago
Black Gem Walnut Tree
I purchased three of the Black Gem walnut trees. After one year two of them are doing quite well. However, one of them died unexpectedly. Not sure why two survived and one died as they all three received the same attention.?
Michael, Arkansas
May 21, 2017
over 3 years ago