Yellow Rock Onion Sets


SOLD OUT FOR THE SEASON 2023! Please return in January 2024 to order early for spring planting.

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Yellow Rock Onion Sets

Yellow Rock Onion Sets of small pearl sized onions planted whole in the spring.

    • 1 lb.= about 90-130 plantable onions
    • Onion bulbs are quite hardy and can withstand 20° F frost
    • Slightly flattened onion with bronze-yellow skin.
    • Mild, sweet-flavored
    • Long Day –  produce well with 14 to 15 hours of sunlight
    • 90-100 Days
    • Long Storing yellow onion bulb
    • Easy to grow
    • 110-120 days from transplant

Basic Onion Growing Info

Sun Requirement: Onions require full sun – the more the better! Therefore, avoid planting next to crops that might shade your onions.
Soil Fertility: Onions prefer soil with a pH between 6.2 and 6.8. If your soil is too acidic, add ground limestone; if it is too alkaline, add peat moss. Adding compost or a balanced organic fertilizer is essential for growing healthy onions, especially if your soil fertility is low. For the best growth and yield, onions need fertilizer at planting time and additional side dressing.
Planting: Onions grow best on raised beds or raised rows at least 4″ high. Typically, onions can be planted as early as 4 to 6 weeks before the last estimated spring frost.
***For detailed instructions on how to grow onions from planting to fertilizing, all the way to harvest/storage, see this post on our blog: Keene Garlic Onion Transplant Guide Blog Post


Our Organic Garlic Fertilizer works great for onion plants too! Its special formulation offers nutrients that all alliums need. Keene Garlic’s Fertilizer is rich in just the right blend of macro- & micro-nutrients, all from organic sources, for healthier, larger garlic & onion bulbs.

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1lb, 5lb


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