Looking for reliable sweet onion bulbs to plant this season? This guide highlights five top options that are well-suited for American gardens, with clear reasons for who they’re best for and practical considerations. Each product is chosen for easy growing, good storage, and flavor that’s ideal for fresh eating, grilling, and caramelizing. The list is especially helpful for beginners seeking dependable varieties and seasoned gardeners aiming to diversify their onion harvests.
Summary of selected products:
- Simply Seed™ – Sweet Yellow Onion Bulbs
- Simply Seed – Sweet Onion Bulb Mix
- Mixed Onion Assortment 8 oz – Red, White & Yellow
- Onion Sets, Super Sweet Onions
- Mixed Red, White, and Yellow Onion Sets 1 Pound
Simply Seed Sweet Yellow Onion Bulbs
Brand: Simply Seed
Features: Can Be Grown Anywhere Northern To Southern Climate; American Grown; These Sweet Yellow Onion Bulbs Always Grow Big Around The One Pound Mark; One Of The Best Storage Onions (6-8 Months); Fresh onions in a few months after planting.
Best for: Home gardeners seeking a reliably sweet yellow onion that stores well and grows in a broad range of climates. Suitable for both first-time planters and experienced growers who want a straightforward, dependable harvest.
Caution: Data notes a consistent yield toward the one-pound bulb size; results may vary with local conditions and soil quality.
Mixed Onion Assortment 8 oz
Brand: Stargazer Perennials
Features: Versatile mix including red, white, and yellow onions; suitable for Zones 3-10; USA grown with a how-to planting guide; Non-GMO; Typically 40-60 onion sets per order.
Best for: Gardeners who want a ready-to-plant variety pack to test multiple color profiles and day-length needs. Good for gift-giving or for households that use several onion types in cooking.
Caution: The mix varies in the number of sets per order due to onion size; plan for slightly different harvest times.
Onion Sets, Super Sweet Onions
Brand: Starting Gardens
Features: “Candy” Super Sweet Onion Sets; mid-day or day-neutral variety; adaptable to many climates from north to south.
Best for: Gardeners who want exceptionally sweet onions with a broad growing window and reliable bulbing. Useful for fresh eating and cooking that highlights natural sweetness.
Caution: Data emphasizes sweetness and adaptability; actual storage duration will depend on curing and handling after harvest.
Walla Walla Sweet Onion Seeds for Planting
Brand: SURVIVAL GARDEN SEEDS
Features: Sweet long-day onion variety; large bulbs; non-GMO; open-pollinated; suited to northern gardens with long daylight.
Best for: Gardeners preferring long-day onions with a mild, sweet profile and a generous bulb size. Note: this item is seed-based and included to illustrate variety; if you strictly want bulbs, choose the bulb-specific options above.
Simply Seed Sweet Onion Bulb Mix
Brand: Simply Seed
Features: Can Be Grown Anywhere Northern To Southern Climate; American Grown; Bulbs typically reach around one pound; Storage 6-8 months; Ready for Spring planting.
Best for: Gardeners who want a mix of sweet onions in bulb form, with a focus on reliable size and storage. Suitable for those who enjoy planting a variety of sweet onions in a single package.
Caution: Mixed bulb sizes may vary; consider staggered planting for a stepped harvest window.
Mixed Red, White, and Yellow Onion Sets
Brand: Stargazer Perennials
Features: 1 Pound Non-GMO onion sets; red, white, and yellow mix; includes guidance on planting and growing; size varies with harvest.
Best for: Gardeners who want a compact, all-purpose set assortment with color variety and straightforward planting. Choose this if you want to compare flavors across colors in one season.
Caution: Numbers of sets per order depend on onion size; plan for variability in total counts.
Buying Guide
What should I consider when choosing sweet onion bulbs for planting?
- Climate and day length: Long-day varieties perform best in cooler northern areas with long summer days. Short-day varieties are better for warmer southern regions. Match the product type to your local daylight hours.
- Bulb size and storage: Bulbs around 1 pound are commonly preferred for home storage. If storage is a priority, look for bulbs listed with extended storage potential (often 6-8 months or more).
- GMO status and origin: Non-GMO and American-grown options can be important for certain garden plans and labeling preferences. Check for seeds vs. sets or bulbs to align with your planting method.
- Color and flavor profile: Yellow onions tend to be milder and sweeter when cooked, while white and red varieties offer different levels of sweetness and sharpness. For variety, consider mixed packs.
- Planting method: Bulbs and sets are typically easier for beginners than seeds, with faster time to harvest. Seeds provide more variability and longer-term planning but require more care.
Comparative Quick Guide
- Best for beginners seeking ease: Onion sets and bulbs with clear planting guides.
- Better for storage: Bulbs marketed with 6-8 months storage windows.
- Choose this if you want color variety: Mixed red, white, and yellow assortments.
- Avoid this if you need exact counts: Some mixes vary in the number of sets per order.
Frequently Asked Questions
- Are sweet onion bulbs easy to grow in all regions? Yes, but choose long-day or short-day varieties to suit your daylight hours and climate.
- What is the advantage of buying a bulb mix? It provides flavor variety and allows comparison of growing results across different onion colors.
- How long do sweet onion bulbs store after harvest? Storage duration depends on curing and storage conditions, commonly several months for well-cured bulbs.
- Should I prefer bulbs or seeds for a first-time gardener? Bulbs or sets are typically easier and faster for beginners; seeds offer more long-term variety but require more planning and care.
- Can I grow sweet onions indoors or in containers? Yes, many sweet onion bulbs and sets can be grown in containers with adequate sun and drainage.
- What is non-GMO status and why does it matter? Non-GMO indicates the product is not genetically modified; some buyers prefer non-GMO for gardening consistency and labeling clarity.