Walla Walla Sweet Onion

Item #133092, Bare-root.
FREE Shipping
on orders of $99+*


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.

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.


Fruit Color Yellow
Fruit Size Large
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.


Pollination is not required for this variety.

This variety does not require pollination to produce a harvestable crop.

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

Arrives when it's time to plant

Your success is our priority. We work hard to make sure that your order arrives at the ideal time for planting in your location based on your local climate conditions.


We've 'tagged' this item with specific keywords that help you find other products that share features or characteristics with this one. Select a tag below to view all the items that have that particular trait.

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 23 answers
Why did you choose this?
Stark Bro's Store
My dad loved them
Old Goat on Mar 8, 2021
It was all that was available in onions
Donna L on May 23, 2020
My dad loved them
Old Goat on Mar 8, 2021
I like sweet onions
Kathy D on Jan 7, 2021
It was all that was available in onions
Donna L on May 23, 2020
Love these!
Sherry D on May 23, 2020
Looks like a quality product.
Richard H on May 21, 2020
Sweet, large, easy to grow, pest resistant. My family's favorite every year!
Jeffrey V on Feb 13, 2020
friend suggestion
Judy M on Mar 30, 2019
Best onion to buy
Lavern K on Mar 6, 2019
we have planted these onions before and they are the best and sweetest that we have found.
EDITH C. on Feb 18, 2019
I chose this onion because it matures sooner than other varieties and it is great tasting.
Maurice B on Jan 30, 2019
Large Onions, Sweet taste, keeps well.
Marmaduke on Mar 31, 2018
Previously grown , tasty onion
TONY 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
I like sweet onions
Kathy D on Jan 7, 2021
Love these!
Sherry D on May 23, 2020
When is the best time to plant onions?
Belen E on Dec 16, 2018
BEST ANSWER: Early spring is best in most growing zones, but if it's more temperate where you live, you may be able to plant now or in the fall to harvest onions all winter long.
How far apart to plant?
Darrell J on Mar 14, 2020
BEST ANSWER: I plant mine in one row with the plants staggered about 4 inches apart. As in a widened V with one plant at each point down the whole row. Saves space and makes weeding less tedious and makes the breaking down of the tops at end of season easier as well. I got very large bulbs even planted in this manner
Are these plants or bulbs?
Kathy S on May 25, 2020
BEST ANSWER: We appreciate you reaching out to us. These are bulbs for planting.

If you have any further questions please don't hesitate to reach back out to us. Have a great day!
Are these onion sets? The bulb?
Jeanie H on May 18, 2020
BEST ANSWER: We appreciate you reaching out to us. Our onions are in bulb form.

If you have any further questions please don't hesitate to reach back out to us. Have a great day!

Customer Reviews

3.9 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
So far so good
I ordered an onion package, walla walla and redwing, along with some garlic for early spring planting. They arrived while the snow was a foot deep and the ground still frozen solid. I was super excited, they were wonderfully fragrant, plump and green! I stored them in a cool place and then suddenly became very ill for almost a month. When I was finally recovered enough to begin planting, I discovered that both sets of onions were all dried up. I wanted to cry! I planted them anyway, in rows in a big raised bed amended with compost, and I am happy to say that two weeks later it looks like all but a few are sending up green shoots! I will update this review at harvest, but I have high hopes. Everything I’ve purchased from Stark has been exceptional, and your customer service sets the bar very high. I will always do business here.
April 28, 2019
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
over 5 years 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 H Staff
Walla Walla Sweet Onion
A very productive and tasty onion. The stock sent was vigorous and grew very well.
May 27, 2016
over 6 years ago
First place at the fair!
These won first place in th local fair for size and just looking some something you'd want to eat! They are sweet and juicy. They are super easy grow, we didn't do much besides plant in dirt. They are not the best for long term storage but still a summertime favorite here! We live in SE Michigan zone 5 and just pulled up a few perfect looking softball sizes this week ( July 12)
July 12, 2017
over 4 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
over 5 years ago
My favorite onion
Last year we had 2-50 foot rows of Walla Walla onions in S. Colorado. They were wonderful! We are from the Pacific Northwest have have always loved these onions and found they even grew great in Colorado!
This year we planted 1-50 foot row and so far 95% of them are growing beautifully! We plan to grow more from Stark Bros. again next year too!
July 12, 2017
over 5 years 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
over 5 years ago
Poor results from the Walla Walla Sweet Onion
We have been gardeners for over 40 years. Trying the Walla Walls onions for the first time last year I was anxiously awaiting the results. Unfortunately, all but a few of the onions survived. The tops dried out in September but before we could pick them they started to regrow and by doing so they became all mushy and not suitable for storage.
July 3, 2018
over 4 years ago