Choose a sunny spot with well-drained soil
Loosen the soil and remove weeds and stones
Mix in compost or well-rotted manure
Plant onion sets, seedlings, or seeds
Place sets or seedlings about 1 inch deep
Space onions 4 to 6 inches apart
Space rows 12 to 18 inches apart
Keep the soil moist but not waterlogged
Mulch lightly to help retain moisture and suppress weeds
Weed regularly around the plants
Feed with a balanced fertilizer if needed
Harvest when tops begin to yellow and fall over
Cure harvested onions in a dry, airy place