Onion Sets

Onion sets are individual onion plants that have had their growth interrupted. While they are still immature, they are pulled up and dried by the grower for planting just like spring flower bulbs. Once they are replanted, they continue to mature normally, forming bulbs by around the summer solstice. Many growers appreciate the convenience of planting onions from sets rather than seeds as they grow more quickly. The trade off is that onion sets are rarely named varieties, so they produce generic onions. Soil should be well-drained, loose, and rich in nitrogen; compact soil affects bulb development. A neutral PH is recommended.

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