Fall is the ideal time to plant onion sets for a healthy, flavorful harvest next summer. This guide highlights five reliable onion bulb options that fit a fall planting schedule, offer good storage, and suit varied growing zones. Each option includes a quick overview, planting notes, and why it’s a solid choice for beginners and seasoned gardeners alike.
| Product | Brand | Size / Count | Notes |
|---|---|---|---|
| TomorrowSeeds – 3 Colors Mix Onion Sets | TomorrowSeeds | ~50 sets / 1/2 lb | |
| Mixed Onion Assortment 50 Plus Count | Stargazer Perennials | 50+ sets / 8 oz | |
| Karmen Red Onion Sets | TomorrowSeeds | 25+ count | |
| Non-GMO Onion Sets, 8 oz Mix | Stargazer Perennials | 8 oz | |
| 3 Colors Mix Onion Sets (Bulbs) Seeds | TomorrowSeeds | 25+ count |
These options emphasize color variety, storage quality, and grow-anywhere accessibility. When choosing, consider your local daylight hours, whether you’re aiming for storage onions, and your garden’s soil and space. The following sections break down five top picks and what makes each a solid add to your fall planting plan.
TomorrowSeeds 3 Colors Mix Onion Sets

This mix provides red, white, and yellow onion sets in one package, helping gardeners diversify flavor profiles in the kitchen. The sets are described as easy to grow, making them suitable for beginners and hobby gardeners. The blend supports a balanced harvest across different culinary applications and storage needs, with a focus on fresh crop quality when planted in fall for next year’s yield.
Mixed Onion Assortment 50 Plus Count

This assortment blends red, white, and yellow onion sets in a single batch. It is described as day-neutral and long-day varieties suitable for a broad range of climates (Zones 3-10). The package includes 8 ounces of onion bulbs and a planting tip sheet to assist both novices and seasoned gardeners with optimal spacing and soil preparation for fall planting.
Karmen Red Onion Sets

These red onion sets produce deep red bulbs with a sweet, mild taste, well-suited for salads and cooking. The product is positioned as beginner-friendly, emphasizing easy planting and growth. Red varieties often fetch strong culinary notes, and the sweet profile supports a wide range of dishes, while still offering good storage properties for post-harvest use.
Non-GMO Onion Sets 8 oz Mix

This non-GMO mix features red, white, and yellow onion bulbs sourced from Oregon, USA. It includes 30–60 sets depending on size and comes with a planting guide. The mix supports diverse home garden setups, providing a reliable option for growers aiming to cultivate a full spectrum of onion colors without genetic modification.
3 Colors Mix Onion Sets (Bulbs) Seeds

This option mirrors the vibrant red, white, and yellow mix, designed for fall planting. It highlights ease of growth for beginners and offers the same color versatility as other TomorrowSeeds mixes. The seeds-oriented listing reflects a focus on fresh crop potential and dependable storage.
Buying Guide: Choosing Onion Bulbs For Fall Planting
Choosing the right onion sets for fall planting involves balancing storage potential, growing conditions, and garden goals. Consider the following factors to make an informed choice:
- Onion type and day length: Long-day onions typically perform best in northern states with long summer days, while short- and intermediate-day varieties suit milder climates. If you’re unsure, a mixed assortment can hedge bets across seasons.
- Storage and flavor: If you want onions for long-term storage and diverse meals, select varieties praised for storage life and balanced sweetness. Red onions often offer stronger flavor, while white and yellow varieties provide versatility in cooking.
- Garden space and soil: Raised beds and well-drained soil help reduce rot. Prepare rich, loose soil with compost to support bulb development. Spacing guidelines usually suggest 4-6 inches between bulbs.
- Planting timing and care: Fall planting requires consistent moisture and protection from hard freezes in late autumn. Mulching can help regulate soil temperature and moisture as bulbs establish roots before winter.
- Non-GMO and origin considerations: Non-GMO options may align with certain gardening goals or regional preferences. In-state or regional varieties can offer better adaptation to climate and growing seasons.
- Included guides and tips: A planting guide or tip sheet is valuable for beginners, ensuring proper depth, spacing, and irrigation practices to maximize germination and yield.
All five products focus on color variety, ease of use, and reliable storage, making them practical choices for fall planting in American home gardens. When selecting, align your order with your local climate, available garden space, and your preferred onion type profile for cooking and storage.