Fertilizing Onions

Anonymous added on February 28, 2011 | Answered

What should I use to fertilize onions?

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Certified GKH Gardening Expert
Answered on March 10, 2011

Onions require a high source of nitrogen. Therefore, a nitrogen-based fertilizer (ammonium sulfate or ammonium nitrate) should be applied. For organic gardeners, a rich compost high in nitrogen should be incorporated into the soil.

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