How to Grow Onions

Onions can be grown from seed or sets (small bulbs). Sets are more costly, and there is a smaller range of cultivars available, but they are quick, reliable and a good choice for beginners.

Drying Onions

Drying Onions

2010 Dorling Kindersley Limited DK - How to Grow Practically Everything

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

When to Start: Early spring
At Their Best: Midsummer
Time to Complete: 1 hour

Materials Needed:

  • onion sets
  • spade
  • rake
  • string line

Plant Sets

Locate a planting site with excellent drainage. Stretch a line of string between two pegs to make a straight row. Use a rake to form a shallow furrow, and plant the sets 6 inches apart, with the tips protruding. Weed regularly, and water during dry spells.

Onion Plants in a Row

Onion Plants in a Row

2010 Dorling Kindersley Limited DK - How to Grow Practically Everything

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

Lift and Dry

Onions are ready for harvesting in midsummer, when the leaves turn yellow and fold over. Lift them and place in a cool, airy place to dry out for a couple of weeks. Use any with thick necks right away, and store the others for later.

Harvesting Onions

Harvesting Onions

2010 Dorling Kindersley Limited DK - How to Grow Practically Everything

DK - How to Grow Practically Everything, 2010 Dorling Kindersley Limited

Next Up

On TV

See Full Schedule

Catch Up With Our Blogs

We're serving up the latest news, gorgeous style, crafty DIY projects, clever entertaining tips and more. Consider these your design digests.

Follow Us Everywhere

Join the party! Don't miss HGTV in your favorite social media feeds.