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Walla Walla Sweet Onion

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The pride of Washington state! Introduced by Walla Walla, Washington in the late 1800’s. An early producer of large and sweet, squat yellow bulbs. A favorite for county fairs and farmers' markets. Walla Walla onions have half the sulfur of an ordinary yellow onion. Matures in 90 days. Open-pollinated. Long-day onion.

Must be ordered before May 8th for spring shipping.


Fruit Color Yellow
Fruit Size Large
Pollination Self-pollinating
Shade/Sun Full Sun
Soil Composition Loamy
Soil Moisture Well Drained
Soil pH Level 6.2 - 6.8
Taste Sweet And Juicy
Texture Firm, Crisp
Years to Bear 1
Zone Range 3 - 9

Zone Compatibility

This Variety's Zone Range 3 - 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.

Recommended Pollinators

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 onion plants in The Growing Guide. An entire section of our website dedicated to your growing success.

Shipping Information

Estimated Delivery Date

You don't pay until it ships.

We work hard to make sure that your order arrives at the ideal time for planting in your location. That's why we only ship living products during certain times of the year. Order now and your credit card won't be charged until your climate is suitable for planting success and your order is shipped.

Our Promise of Satisfaction

1 Year Warranty

Every order comes with our promise of satisfaction. If you aren't completely satisfied with your order, let us know within one year for a free one-time replacement or refund.


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Questions & Answers

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Browse 2 questions Browse 2 questions and 7 answers
Why did you choose this?
Stark Bro's Store
Previously grown , tasty onion
Anthony M on Apr 12, 2016
Just what the witch doctor ordered.
Charles A on Mar 11, 2016
Previously grown , tasty onion
Anthony M on Apr 12, 2016
Best onion ever especially on your hamburgers. Large and sweet.
David H on Apr 7, 2016
Just what the witch doctor ordered.
Charles A on Mar 11, 2016
Best onion ever especially on your hamburgers. Large and sweet.
David H on Apr 7, 2016

Customer Reviews

3.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Walla Walla Sweet Onion
A very productive and tasty onion. The stock sent was vigorous and grew very well.
May 27, 2016
over 2 years ago
Sweet & Delicious
These onions grew beautifully; productive, sweet and delish! They didn't store very well though, sprouting within a few weeks even in the root cellar with great conditions for storage. The Candy onions, also productive and excellent eating, have store very well, much better than the Walla Walla; in fact, we are still enjoying them!
February 1, 2017
1 year ago
Awesome walla walla onions
They were great and I'm ordering more this year. After ordering they came in a sufficient amount of time like I was told.
May 2, 2017
1 year ago
Very disappointed
We have always purchased all of our onions through Starks and this year none of our onions made it. They were planted and have all died. So disappointed in the product that were shipped to us.
May 2, 2017
1 year ago
Response from Stark Bro's
Thank you for your feedback. I'm very sorry to hear about your nursery stock. Please contact Customer Support at 800-325-4180 for replacement information.
May 10, 2017
Brenda HStaff
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