Choose a sunny location with well-drained soil
Loosen the soil and remove rocks and weeds
Mix in compost or well-rotted organic matter
Test soil pH and aim for slightly acidic to neutral soil
Plant onion sets, transplants, or seeds
Set onion bulbs or transplants 1 to 2 inches deep
Space plants 4 to 6 inches apart
Space rows 12 to 18 inches apart
Plant seeds shallowly and cover lightly with soil
Water after planting
Keep soil evenly moist
Mulch lightly to reduce weeds and retain moisture
Weed regularly
Feed with a nitrogen-rich fertilizer if needed
Harvest when tops fall over and begin to dry
Cure harvested onions in a dry, airy place