Allium cepa Plant these onions in late August, and they’ll overwinter for high-quality, extra sweet onions in early-to-mid June. Plant in spring to harvest in late summer/early fall. Sow True Seed, a small, dedicated employee-owned cooperative committed to making gardening approachable for everyone, has been supporting food security and seed diversity since 2009. Their collection of GMO-free seeds contain heirloom, organic, and small farmer-grown varieties. · 295 certified organic seeds · Start indoors 8 to 10 weeks before last frost. · Full sun · Bulbs 3 to 6 inches at maturity Your purchase is powerful. Not only does it help to sustain local artisans and preserve traditional arts and crafts, but it directly supports horticulture, research, and educational programming at the Gardens. ">