Onion Sets - Knowledgebase Question

Oak Grove, KY
Avatar for nefariouz1
Question by nefariouz1
January 1, 2000
I'm keeping you guys busy today! Last year I bought some Onion sets and planted them according to a book I had, which said to plant them deeper for onions and shallow for green onions. Most of them didn't grow. They didn't rot, just didn't do anything. Then someone told me that you don't even cover them all the way. Now I'm confused!!! Lori

Answer from NGA
January 1, 2000
Plant sets about 2-4 weeks before the last frost date in your area. Plant in a full sun location in loamy sand soil that has been amended with compost, and 1 pound of 10-10-10 fertilizer per 20 feet of garden. Plant the sets slightly below the soil line about 4 inches apart and water well. Once the soil warms, mulch to keep down competing weeds and help the soil retain moisture. Keep them well watered and weeded all summer and they should respond with some nice size bulbs. If the bulbs seem small, you can side dress about 4-6 weeks after planting with more 10-10-10 fertilizer or compost. Onions need at least one inch of water per week during the growing season. At the end of the season, when the tops begin to yellow, bend them down to stop the sap from flowing into the stems. This diverts the energy into the bulbs, rather than the tops. I hope this info helps you grow great onions! For a good reference, check out "Vegetable Gardening for Dummies," by Charlie Nardozzi and the editors of NGA.

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