- Start in early spring indoors / heated greenhouse 8-10 weeks before transplanting outdoors.
- Can be sown in late summer / autumn to over-winter in milder UK areas.
- When transplanting, clip plants to three inches and plant 2 inches deep.
- Can be sown directly when ground has warmed in mid-late spring, at 2-3 seeds per inch, however bulbs may struggle to mature in poor summers.
- Thin to 5 inches apart when plants are 6 inches tall.
- Harvest young for salads or when mature as tops are brown and dry.
- Fertile, moist soil enriched with compost is best for onion production.
- Onions are claimed to ward off many insect pests around lettuce, cabbage and carrots.
