Growing Onions in the Desert - Knowledgebase Question

Mesa, AZ
Avatar for gmsteffensme
Question by gmsteffensme
February 10, 1998
How do you grow good tasting onions in the low desert? What soil amendments and fertilizer do they need?

Answer from NGA
February 10, 1998
Maricopa County is a great place to grow onions. As a matter of fact we host the "Sweet Onion Festival".

There are several keys to growing onions in the low desert successfully. Plant at the right time: If your are trying to grow onion bulbs, plant seeds in October or early November. It takes 7-8 months for seeds to mature. Or, plant sets in February. It takes 4-5 months for sets to mature. You can plant green onions from August through April. Avoid using soil sulfur as a soil amendment: this impacts the onion flavor. Otherwise, onions are "heavy feeders" so provide adequate nutrients as outlined by a soil test.

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