Forum is an F1 hybrid fall-planted onion bred for early harvesting, reaching full maturity in just 90 days from planting. Bred as an overwintering variety, it thrives in hardiness zones 3 through 10, making it adaptable across most of North America. The compact growth habit and frost-hardy nature mean you can plant Forum sets in autumn and harvest substantial bulbs the following spring, extending your onion season well beyond traditional spring plantings. This variety performs best in well-draining soil with a pH between 6.0 and 7.0, requiring moderate water and full sun to develop properly.
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Moderate
3-10
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High
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Forum excels as an early overwintering onion that bridges the gap between fall plantings and spring harvests. The 90-day maturity from sets means you're pulling mature bulbs while other varieties are still establishing roots. Because it's frost-hardy and compact, it fits neatly into fall garden plans without demanding extra space or coddling. The bulbs dry down and store reasonably well when properly cured, giving you fresh onions from your own garden well into the winter months.
Forum onions are grown for fresh consumption as full-size bulbs or harvested early as small bulbs for bunching green onions. The bulbs suit both fresh eating and storage, making them useful for both immediate kitchen use and extended pantry keeping after proper curing.
No timeline data available yet for this variety.
Forum onion sets are planted directly into the ground rather than started indoors. Plant as soon as possible after receiving sets, ideally within one week of delivery. Choose a location with full sun and rich, well-drained soil. Sets are best planted at a depth and spacing that allows developing bulbs room to swell above the soil surface.
For small bulbs destined for bunching green onions, harvest once the bulbs have developed noticeably. For full-size mature bulbs, watch for softening neck tissue and begin checking when the tops start falling over naturally. Once approximately 50% of the tops have fallen over, pull the onions from the ground and allow them to dry in the sun for 2 to 7 days. When the foliage and necks are completely dry, clip the roots and cut the tops back to 1 inch before storage.
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