Small Onion Bulbs - Knowledgebase Question

Kansas City, MO
Avatar for brwndog
Question by brwndog
March 28, 1998
When I plant onion sets in the garden I get great green
onions,but I can't get good table onions. They don't get
any bigger than the size of a quarter. Any suggestions?

Answer from NGA
March 28, 1998
There are a number of reasons why your onions don't set large bulbs. First of all, grow varieties that are adapted to your climate such as 'Candy' and 'Sweet Sandwich'. Next, plant early either as sets (about 2 weeks before the last frost date in your area) or as seeds indoors about 8-10 weeks before transplanting. 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 and plants slightly below the soil line about 4 inches apart and water well. 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.

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