Onions can be planted once soil is workable in early spring. They require full sun, consistent moisture, and regular fertility.
Planting Guidelines
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Depth: 1 inch
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Spacing: 4 inches apart
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Soil: Loamy and compost-rich
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Maturity: 70–80 days
Side dress with 10-10-10 every two weeks at a rate of ½ cup per 10 feet of row.
Stop fertilizing once bulbs begin swelling and allow the bulb to fill out.
Companion Planting
Plant near:
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Peppers
Avoid planting near:
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Peas
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Beans
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Asparagus
Types of Onions
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Yellow and White Sets: Classic slicing onions
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Purple Sets: Slightly sweeter
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Onion Starts: Often sweet varieties such as Walla Walla, Texas Sweets, and Candy
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Scallions: Harvested young and eaten whole
Harvest and Storage
When tops fall over and begin turning yellow:
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Pull onions
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Cure by laying out on racks or hanging
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Once dry, trim tops
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Store in a cool, dry location
Onions may bolt if soils become too warm in early summer. Bolted onions should be discarded.
Growing Success Starts with Preparation
Healthy vegetables begin with healthy soil. Compost, balanced fertilizers such as 10-10-10, proper spacing, and consistent watering practices make all the difference. The Mill carries certified seed potatoes, asparagus crowns, onion sets, garlic, compost, fertilizers, and soil amendments to support every stage of the growing process.
From cool spring soil to midsummer harvest, every vegetable has its season. With the right timing and knowledge, gardeners can enjoy productive yields year after year.
For more expert advice, visit your local The Mill location or explore additional gardening resources at themillstores.com.
