Choose a sunny location with well-drained soil
Prepare loose, fertile soil and remove weeds
Mix in compost or well-rotted manure before planting
Plant onion sets, seedlings, or seeds at the proper depth
Space plants so bulbs have room to grow
Water regularly to keep soil evenly moist
Avoid overwatering to prevent rot
Fertilize lightly during the growing season
Keep the planting area weed-free
Mulch around plants to conserve moisture and reduce weeds
Remove flower stalks if they appear
Harvest when tops begin to yellow and fall over
Cure harvested onions in a dry, airy place
Store cured onions in a cool, dry, dark location