'Radar' Organic Onion Sets (Autumn / Early Spring Planting) 22-26mm
'Radar' Autumn till early Spring (October-March) planting sets are an excellent overwintering/Japanese Onion. Larger sets 22-26mm. More details below.
Pre-order organic planting garlic, onion sets and flower bulbs from August 2026. Stock due from Mid-September 2026. If you need other goods sooner please order those separately.
Organic Radar Onion Sets 22-26mm
- Onion sets of this overwintering Japanese variety for planting from September, can even be planted in January, February and March.
- Winter hardy
- Can be pulled throughout Winter and Spring as scallions, or left to grow into mature onions
- Radar onions will be ready for harvesting in May/June, 3-4 weeks before spring planted sets will be ready
- Can be planted in Spring for an early crop in June-July
- Onions need a friable, free-draining soil and it needs to be a fertile, weed-free, compost-enriched spot in full sun (no fresh manure)
- Sow 3cm deep and 4-5cm apart in the row with 30-40cm apart between the rows
Average number of sets:
- 500g = 50 sets
- 1kg = 100 sets
- 10kg = 1000 sets
- 25kg bag = 2,500 sets
Autumn Planted Onions
The principal advantage of planting onion sets in the autumn is that your onions are ready to harvest around a month before spring-sown onion sets are. Also, because they are harvested around a month earlier, you can potentially immediately follow them with another crop that would be too late to plant a month later. Sweet corn and winter squash for example. For a good yield, onions need moist soil when they are bulking up in Spring.
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