Southern Belle Red Onion is a long-day variety bred for gardeners in hardiness zones 3 through 10, producing deep red bulbs after 110 days from seed. This is a frost-hardy cultivar that thrives in a wide range of climates, making it reliable across much of North America. The variety demands consistent moisture and well-balanced soil (pH 6.0-7.0), rewarding attentive growers with substantial yields of storage-quality bulbs.
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Southern Belle Red Onion matures in 110 days from direct seeding, a reasonable timeline that fits many regional growing seasons. Its frost-hardy nature means you can push planting earlier in spring without fear of late freezes derailing your crop. The variety's photoperiodic response to day length makes it particularly suited to northern and mid-range gardens where traditional red onions sometimes struggle to form proper bulbs.
As a storage onion, Southern Belle Red is harvested at maturity and cured for extended pantry storage, making it valuable for gardeners who want red onions available through fall and winter months. The bulbs are suited to raw use in salads and slaws, roasting, and general cooking applications where red onions' mild-to-moderate pungency is desired.
No timeline data available yet for this variety.
Sow seeds indoors in a 4- to 6-inch pot, planting up to 10 to 12 seeds per pot. Maintain soil temperature between 50 and 70 degrees Fahrenheit for germination. If seedling tops grow taller than 5 inches before transplanting, cut them back to 3 inches to encourage stronger root development.
When seedlings are ready to transplant, carefully separate them and plant in a shallow trench outdoors. Space individual seedlings 2 inches apart, with rows 12 inches apart. Fill the trench around seedlings and water in well to establish good soil contact.
Direct seed into prepared garden bed; thin seedlings to the strongest plant when they reach 4 to 5 inches tall. Days to maturity are calculated from the date of direct seeding.
Harvest when about half the tops have naturally fallen over. Push over any remaining upright tops and wait approximately 1 week before harvesting. Loosen the soil around bulbs slightly to encourage even drying. Always harvest in dry weather; onions picked in wet conditions do not cure properly and are prone to rot. Remove any onions that have sent up flower stalks, as these bulbs will not store well.
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