How deep do you plant onion sets?

Written by gabrielle morgan
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How deep do you plant onion sets?
Dormant onion sets take less time to grow then onion seeds. (huge onions and smallonion bulbs image by Maria Brzostowska from Fotolia.com)

Onions are planted either from seeds, plants or dormant bulb sets. Seeds take the longest amount of time to grow, while gardener's save time by planting onion sets which are widely available in the early spring. Planting the sets at the proper depth and spacing is essential to increase the onion size and quality.

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Depth

Plant onion sets, or dormant bulbs, 1-½ to 2-½ inches deep in a location with full sun. Onions require well-drained soil high in organic matter and consistent moisture.

How deep do you plant onion sets?
Plant onion sets in rows in a location with full sun. (onion image by Nino Pavisic from Fotolia.com)

Spacing

Space the sets 3 to 4 inches apart in rows. Leave a space of 12 to 15 inches between rows. Harvest every other plant after a month and a half to use as scallions, also known as spring onions.

How deep do you plant onion sets?
Space rows 12 to 15 inches apart and harvest scallions after a month. (Onion image by fotoedgaras from Fotolia.com)

Precautions

Thrips, onion maggots and soil-borne diseases are common among onion plants. Avoid problems with these pests by planting onion sets in a different location each year. Keep the onion sets free of weeds and mulch with grass clippings or straw to help keep the soil moist.

How deep do you plant onion sets?
Plant onions in a new location each year to prevent infestation and disease. (onions image by AGITA LEIMANE from Fotolia.com)

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