GROWING ONION SEED
Plant the seed 1/2" deep in a flat 2-3 months before the last frost date; keep the soil moist at room temperature.
When the tops begin to flop over, cut them off to 3" to focus the growing on the roots.
Four weeks before the last frost, transplant the seedling 6" apart in rows 12" apart.
For direct sowing, sow three seeds per inch 1/2" deep in light, rich soil, and full sun.
For companion planting benefits, plant onion with members of cabbage family, lettuce,or tomatoes, avoid planting onion with peas or beans.