Finding the right onion sets for spring planting helps ensure early harvests and flavorful cooking onions. This guide highlights five top picks, each described with who it’s best for, plus practical buying tips. The selections cover non-GMO options, warm-weather and cool-weather varieties, and easy-to-grow choices for beginners and seasoned gardeners alike.
Quick comparison table
| Product | Best For | Key Benefit |
|---|---|---|
| Stargazer Non-GMO Onion Sets Mix | Home gardeners who want a color mix | Red, white, yellow onions in one pack |
| Country Creek Red Onion Starter Sets | Early green onions and reliable reds | 50 bulbs for quick greens |
| Stargazer Mixed Red/White/Yellow Onion Sets (1 lb) | Versatile, varied harvests | 1 lb mix of three colors |
| ESKS Yellow Onion Sets 100 bulbs | Reliable yellow cooking onions | Non-GMO, versatile planting |
| ESKS Yellow Onion Sets 120–150 bulbs (1 lb) | High-volume spring planting | Large pack for big harvests |
Stargazer Non-GMO Onion Sets Mix
Brand: Stargazer Perennials. Type: Non-GMO onion mix containing red, white, and yellow bulbs (8 oz). Includes 30–60 sets depending on size, grown in Oregon, USA. A planting guide is included to assist both novice and experienced gardeners.
Best for: Home gardeners who want a color-mful harvest and a built-in guide. The mix reduces the need to choose between colors and provides a straightforward planting experience.
Caution: The exact number of sets varies by bulb size, so plan for roughly 30–60 bulbs in an 8 oz bag.
Red Onion Starter Sets – 50 Count
Brand: COUNTRY CREEK ACRES GROWING IS IN OUR ROOTS. This set includes 50 “baby” onions or bulbs intended for growing early green onions or larger dry onions. Red onions are noted for slicing use and culinary versatility.
Best for: Gardeners seeking quick greens in spring or a simple red onion start for cooking-friendly onions.
Caution: Best results come from well-drained soil and consistent moisture; heavy soils may slow establishment.
Mixed Red, White, and Yellow Onion Sets (1 lb)
Brand: Stargazer Perennials. This 1-pound bag includes a random mix of red, white, and yellow non-GMO onion sets. It comes with a planting tip sheet and typically contains 80–100 sets, depending on onion size.
Best for: Gardeners wanting a varied harvest with multiple color options and guidance on planting.
Caution: Because it’s a mixed lot, the exact color distribution can vary by order; plan accordingly for color-specific recipes.
Yellow Onion Sets for Planting – 100 Bulbs
Brand: ESKS. Naturally grown, non-GMO yellow onion bulbs in a roughly 100-bulb pack. Versatile for garden beds, containers, and raised planters across climate zones. Produces golden, mild-flavored onions.
Best for: Gardeners seeking reliable yellow cooking onions with straightforward spring planting and broad adaptability.
Caution: Growth will vary with soil quality and moisture; ensure good drainage and steady moisture for best bulbing.
Yellow Onion Sets for Planting – 1 lb (120–150 Bulbs)
Brand: ESKS. This 1 lb package contains 120–150 yellow onion bulbs, non-GMO. Designed for spring or fall planting to yield full-sized cooking onions with sweet, mild flavor for a variety of dishes.
Best for: Gardeners planning a larger harvest and wanting a bulk option for future use and consistent yields.
Caution: Large packs require ample, well-prepared planting beds; overcrowding can limit bulb development.
Organo Republic 8 Onion Seeds Variety Pack
Brand: Organo Republic. A variety pack containing 2,200+ seeds across eight onion types, including Walla Walla, Red Burgundy, Green Onion, White & Yellow Sweet Spanish, and more. Pack includes a waterproof resealable bag, seed packets, and access to growing guides.
Best for: Gardeners who prefer starting from seeds or who want a broader spectrum of onion flavors for seasonal rotations.
Caution: Seed packs require more planning and care than sets; germination depends on temperature, light, and soil conditions.
Buying Guide: Key Considerations For Spring Onion Sets
- Choosing between sets or seeds: Sets offer faster results and fewer germination uncertainties compared with seeds, which require planning, germination, and longer time to harvest.
- Day-length tolerance: Some onions are better suited for long days, others for day-neutral or intermediate day-length. Pick varieties aligned with your local climate and daylight hours.
- Non-GMO and origin: If avoiding GMOs is important, prioritize non-GMO options. Look for bulbs grown in reliable regions (e.g., USA) to support consistent germination.
- Soil and drainage: Onions thrive in loose, well-drained soil. Improve clay or compacted soils with compost and appropriate amendments before planting.
- Spacing and depth: Plant sets shallowly, just above the soil line. Spacing depends on bulb size and variety but generally allows 4–6 inches between sets.
- Moisture management: Maintain even soil moisture; avoid between-watering to prevent rot. Mulching can help conserve moisture and suppress weeds.
- Harvest timing: Green onions (scallions) are harvested earlier, while bulb onions need longer to mature. Consider your intended use when choosing varieties.
Frequently Asked Questions
- What is the advantage of using onion sets instead of seeds for spring planting?
Onion sets mature faster and reduce germination uncertainty, producing harvest-ready bulbs sooner than starting from seed.
- Do all onion sets work in home gardens?
Most do, but some are better suited for long-day or day-neutral climates. Check the package for day-length information and regional suitability.
- How many onions can I expect from a 1 lb bag of sets?
Expect dozens to potentially over a hundred bulbs, depending on bulb size and spacing during planting.
- What are the best containers for growing onion sets?
Raised beds, traditional garden rows, or large containers with good drainage work well for containers and raised planters.
- Should I fertilize after planting onion sets?
Yes. A balanced fertilizer or compost applied at planting supports bulb development without excessive growth of greens.
- When is the best time to plant onion sets in the U.S.?
Spring planting is common in many regions, with timing depending on local last frost dates and soil temperatures.