
Successful onion farming is all about starting right and staying the course till the harvesting. In this post, we share onion starting and planting tips.
- Grow onions from seed, seedlings,
- Onion seed is very small and can be difficult to handle; However, onions started from seed in the garden grow larger and store longer.
- For better results plant seeds in a seedbed
- Seed is viable for just 1 to 2 years.
- Transplant to the garden as soon as the soil can be worked.
- Sow seed ¼ to ½ (6-12 mm) inch deep; plant sets about 1 inch (2.5 cm) deep for large onions, 2 inches (5 cm) deep for green onions.
- Transplant seedlings to the farm approx. 45 days after sowing.
- Sow seed 1 inch (2.5 cm) apart or closer and later thin successful plant to 4 inches (7.5-10 cm) apart for bulb onions, closer for green onions.
- Space rows 12 inches (30 cm) apart.
- Sow seed in loose, fertile soil. Adding aged compost to planting beds in advance of sowing will feed the soil and aide moisture retention.
- Seeds should germinate in 4 to 10 days at an optimal temperature of 70°F (21°C) or thereabouts; germination will take longer in colder soil but germination can be slow in cold weather.
- Make sure you have the right pH range for onions to thrive
- High soil nitrogen will delay bulbing—as will temperatures too cool.
- Onions grown in potassium-deficient soil will not store well; onions grown in phosphorus-deficient soil will have thick necks and mature more slowly.
- Keep the planting beds free of weeds to avoid competition for moisture and nutrients.
- Avoid planting onions where garlic or leeks have grown recently.
- Fertilize with an organic fertilizer.
- Common pest enemies include onion maggots, amphids, slugs, thrips, wireworms. etc Always always protect seedlings from pests and cold after planting in the farm.