Sowing: Sow onion seed throughout the garden in any case chance of frost has passed in spring and the soil is a minimum of 55°F (13°C)—warmer is best possible. In warm-winter spaces, plant onions out of doors throughout the fall. Get began onion seed indoors 8 weeks forward of transplanting seedlings to the garden. Sow seeds in a warmth, well-lighted location—in a sparkly window or beneath expand lighting fixtures. Sow seeds 1/4″ (6 mm) deep in seed starting mix. Corporate lightly and keep mix merely rainy. Seedlings emerge in 7-14 days at 60-85°F (16-29°C).
Make sure that to choose the correct variety to your day length. Throughout the Northern Hemisphere, Southern gardeners will have to make a selection Fast Day sorts (10-12 hours of sunlight each day); Northern gardeners will have to make a selection Long Day sorts (14-15 hours of sunlight each day); gardeners in between will have to make a selection Intermediate Day sorts (13-14 hours of sunlight each day).
Emerging: Seedlings can be transplanted into the garden when they are 3-4” (7.5-10 cm) tall. Switch seedlings to a sheltered place out of doors to “harden off” 1 week forward of transplanting. Area plants 3-5″ (7.5-13 cm) apart for bulb onions, 2-3” (5-13 cm) apart for scallions and bunching onions. Broaden onions in compost-rich, well-drained soil, in entire sun. Give onions commonplace water keeping up the soil lightly rainy. Do not plant onion family vegetation within the identical place 2 years in a row.
Harvesting: Bulb onions are in a position for harvest 80-120 days after seeding, 30-40 days from devices (small bulbs). Harvest green onions when they are 6-8” inches (15-20 cm) tall. Hasten the harvest of bulb onions by way of bending stalks to the ground (referred to as “lodging”) about 100 days after sowing, when the tops have begun to turn yellow and fall over. A few days later elevate bulbs and allow to dry (“cure”) throughout the garden coated or indoors in a warmth, dry place with excellent air transfer for 1-2 weeks. Then scale back the foliage about 1” (2.5 cm) above the bulb and store in a fab, dry location.
Be informed additional detailed onion emerging articles at Onions.
