for Successfully Growing
Sunlight : Onions grow best in full sunlight as it
is needed for proper growth and development of the onion.
Soil Preparation: Add manure, mushroom compost, and/or sand to
area several weeks before planting. The soil should be loose, fertile, and have
adequate draining with a pH between 6.0 and 7.0. Keeping the soil loose
throughout the growing will eliminate stress caused by compacted soil and
increase the bulb size.
Planting: Onions can be planted in wide rows for maximum production.
Onions do best when they are planted on a mound about 6 to 8 inches high and 20
inch wide. In the center of the mound make a 4" wide by 4" deep fertilizer
strip.The fertilize in the strip will spread through the entire mound when you
are watering the row. Plant bulbs shallow, no more than 1” deep and about
2" from the outside of the mound. Planting this way will give you two row
of onions per mound. Planting on a mound like this will help to keep the onion
from standing in water and also help with the dirt being pushed away from the
bulb as it grows. For “green onions” plant about 2-3 inches apart. For full
size onions, plant 4-6 inches apart. Some people will plant 2-3 inches apart
and as the onion grows they harvest ever other one as a green onion which is
called a spring onion and leave the other plants to make a large onion.
Fertilization: After 1 month of growing, side dress with 10-10-10
fertilizer or feed foliage with a mild solution of fish or seaweed emulsion. In
the early stage of growth you need to promoted as much top growth as possible
which will make for a bigger onion. Onions grow in rings, each stem on the plant is a ring on the bulb. So the more stems your plant makes the bigger the onion will be. This is why it is important to feed the plants more in the early months of growth when the tops are in the development stage. It is best to side dress the onion
plants with 10-10-10 about ever 3 to 4 weeks. If you are growing on a mound add
more fertilizer in the fertilizer strip about ever 3 to 4 weeks.
Growing/Harvest: For “green onions,”
harvest every other onion and leave remaining bulbs to grow into full size
onions. For larger onions, keep soil pulled away from the upper 2/3 of the
bulb. Do not allow plants to flower. Water regularly until tops begin to yellow
and then withhold water to allow skins to ripen. This will take a few days.
Fold tops over to allow sun to reach bulbs. Once tops are dry, pull onions
place in the sun to dry. Store in cool, dark, dry, well ventilated place.