South Mountain Nursery
Utah Yellow Sweet Spanish Onion Seeds Heirloom
Utah Yellow Sweet Spanish Onion Seeds Heirloom
Utah Yellow Sweet Spanish Onion seeds are a non-GMO heirloom Allium cepa variety bred for western climates. This long-day yellow onion is noted for producing large bulbs—often over a pound—with strong storage capabilities and is well suited to west coast climates and mid-northern states. The pack includes 2 grams of seeds and the crop typically requires 100–115 days to mature.
Relatively easy to grow, with moderate pink root tolerance, this onion is a cool-hardy vegetable. Direct sow 6–8 weeks before spring frost, or about 4–6 weeks before autumn frost; seeds may also be started indoors for early starts. For best results, use well-tilled, nitrogen-rich soil with a pH of 6.0–7.0, and sow at about 1/4 inch depth. Long-day onions prefer the northern half of the country, while short-day types perform better in the south.
📋 Product summary:
- Utah Yellow Sweet Spanish Onion — heirloom, non-GMO, Allium cepa, long-day variety.
- Seed quantity: 2 grams per package.
- Days to maturity: 100–115 days.
- Bulb size and storage: Large bulbs typically weigh over a pound with strong storage capabilities.
- Climate suitability: Grows well in western states; suitable for west coast climates and mid-northern states.
- Growth tolerance: Moderate pink root tolerance; cool-hardy.
- Planting directions: Can be sown directly 6–8 weeks before final spring frost or about 4–6 weeks before the first autumn frost; may also be started indoors for early starts.
- Soil and depth: Soil should be well-tilled, nitrogen-rich, with a pH of 6.0–7.0; sow at 1/4 inch deep.
- Day-length guidance: Long-day onions grow best in the northern half of the country; short-day thrives in the southern half.
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🇺🇸 Free shipping nationwide
🇺🇸 Free shipping nationwide
Some free shipping products may be limited to the lower 48 states. All of the shipping estimator tools and the checkout cart will notify you of such a result.
📦 Shipping policy & returns
📦 Shipping policy & returns
NATIONWIDE SHIPPING:
Some free shipping products may be limited to the lower 48 states, as indicated by our shipping estimator tools and checkout cart. Outdoor living, home, and garden items ship nationwide. Standard shipping fees are confirmed at checkout based on your address and provider selection. Free shipping items incur zero fees at checkout. Tracking details are emailed instantly upon order fulfillment.
NATIONWIDE SHIPPING RETURNS: 30 day returns.
We accept returns of unused products that are defective or not defective. Your return must be processed within 30 days of the date of purchase. We do not process exchanges. We will provide a shipping label by email, you are responsible for bringing the return to the shipping provider.
FREIGHT PRODUCT RETURNS: no returns or exchanges.
There are no returns, exchanges or refunds for products delivered via freight. REFUNDS: The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the returned product is received and processed.
NATIONWIDE PRODUCT REFUNDS:
The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the order is canceled and the returned product is received and processed.
Let customers speak for us
Really nice soil and awesome service
Never used because I ordered the wrong Water Filter. Mike was very helpful with the return and refund. Excellent Customer Service.
Great service. Soil is what I wanted and it off loaded exactly where I asked.
Plants are doing really well with this soil. Deep and rich looking soil, plants seem really happy. Much more cost effective (and no plastic bag waste) compared to buying bags of soil mix from a store.
The quality of the craftsmanship is superb! My formula one fan absolutely loves it!!!!
Worked like an absolute charm!
These markers were perfect for ones that we were replacing. The quality is great and they seem sturdy. The gold detail stands out and is visible from a distance. Shipping was very fast.
Good solution. The little flies have disappeared. We were sure to mist/moisten the surface of each plant once a day for 4 or 5 days, after the initial application of the nematodes, to keep the little guys mobile and able to get to any remaining eggs. So, go for it!
Plant was well packed and shipment was very fast. Received a very nice fully rooted plant in the pot!
The organic garden soil is doing very well in my garden bed. The company was professional, nice, and accommodating to my needs. They provide many types of things for your landscaping at a reasonable price.
Product was delivered promptly and the quality of the product was very good, as hoped for. I was thrilled to receive the product so quickly! Thank you!
Product is great. Didn't care for having to pay am extra $17 tariff to UPS to get it delivered, but I guess that's not your doing. Thank you Mr. President.
