Prime-Jim® Blackberry

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Enjoy months of berries. You’ll get crop after crop of large, delicious berries, even in the canes' first year. Slightly more vigorous than Prime-Jan® with larger second-year canes. First-year canes begin ripening in July, while second-year canes bear heaviest crops in June. Both continue to fruit until frost. Everbearing primocane. Cold-hardy. Self-pollinating. May be covered by USPP #16,989 or other patents. APF-12 cultivar.

125% Survival Guarantee!

Since 1816, Stark Bro’s has promised to provide customers with the very best fruit trees and plants. It’s just that simple. If your trees or plants do not survive, please let us know within one year of delivery. We will issue a one-time merchandise credit to your account equaling 125% of the original product purchase price. Read more about our warranty policy.


Bloom Color Pink, White
Fruit Color Black
Fruit Size Extra Large
Pollination Self-Pollinating
Ripens/Harvest First Year Canes July, Second Year Canes June
Shade/Sun Full Sun
Soil Composition Loamy
Soil Moisture Well Drained
Soil pH Level 6.0 - 6.8
Taste Sweet
Texture Firm
Years to Bear 1 - 2
Zone Range 4 - 8

Zone Compatibility

This Variety's Zone Range 4 - 8
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.

Planting & Care

Learn all about how to grow blackberry plants in The Growing Guide. An entire section of our website dedicated to your growing success.


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Questions & Answers

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Browse 3 questions Browse 3 questions and 5 answers
does the Prime Jim spread underground?
janed on Mar 21, 2018
BEST ANSWER: As most all blackberries do, it self-propagates. Just dig and replant the suckers for free plants, or snip them below ground to control growth.
How to Prune prime jim and jane blackberries?
Nancy W on Oct 18, 2018
BEST ANSWER: Hi Nancy, please refer to our Growing Guide, How to Prune Blackberries.

Customer Reviews

4.0 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2 out of 3 survived becuase the landscaper is stupid.
I had 3 planted in April 2015. The landscaper for the apartment complex cut the 3 bushes down 3 times last year. I ringed them with stone and they grew back in the fall. I was able to get 2 to survive through the winter. Growing hard and heavy right now.
April 12, 2016
over 6 years ago
Ok Producer, But Poor on Flavor
I was excited about these, but after growing them for a few years, I would not recommend them, except as a backup crop in case abnormal weather zaps all your other varieties. Fruits are good size, but with a VERY short window of ripeness—they remain hard while fully black for a few days, and the sweetness doesn't start to develop until they're nearly mushy, at which point the texture is bad, and there's also an unpleasant "gritty" feeling to them. I hope Stark Bros. discontinued these based on poor feedback, this variety isn't worth the patent!
March 25, 2016
Unbelievable fruit set.
I would highly recommend this variety to anyone who loves to eat blackberries fresh off the vine. They are large, juicy and reliable. They continue to bloom after the first set of fruit and have fruit well into the fall even bearing some years until frost. I was dishearten to learn you no longer carry this variety.

One thing to note as with all blackberries you will find them freely moving around the yard.
May 5, 2016
over 7 years ago
good blackberries
Takes about 2 to 3 years to get Good production.They like toSpread out more than regular blackberries.Which is good If you want more plants.
August 7, 2016
over 6 years ago
Plants are doing good
I planted 6 of these plants three years ago and they are growing like weeds. We had a good berry crop the second year and the blooms are popping going into the third spring. The berries were a touch more tart than I would of liked but I am very pleased with these plants.
May 9, 2016
over 6 years ago
I was so excited to find a zone 4 blackberry but I'm afraid I didn't have very good luck. Three of the six did not make it through last summer and only one of the remaining three looks like it has any life at all this spring.
Guess I'm just destined to not grow blackberries.
May 13, 2016
over 6 years ago
Black berries in WY
They grew so well, tall,3-4 feet and produced on top of plant. Nobody but me had blackberries inLander WY.
May 5, 2016
over 7 years ago