They grow all throughout the summer they are harvested in fall intermediate day onions start forming ball when the day length is 12 to 14 hours per day theses can be grown anywhere except for areas that are too humid. onions can be grown from seed seedling or sets. it is really easy to saw some seeds and start from your own onion seedlings once the onion seedling about six inches tall they’re ready for transplanting. Make some space in your soil and start planting onions, keep adequate space between plants. Onions should be four inches apart and row spacing should be anywhere from six inches to twelve inches apart crowding.
The onions will produce more onions for smaller bulbs. spacing the onions a little bit further produce larger bulbs but fewer onions per spaced practice crop rotation. when growing onions to reduce pests and disease people traditionally grow onion with carrot it is believed that the pests that like carrot don’t like onions and vice-versa do not overwater onions keep the soil moist and water again when the soil begins to dry average onions grow rapidly after just one month onions are about eighteen inches to twenty-four inches tall . after this onions will start to form the bulbs. another tip to grow big onion bulb is to snip off any seed pods this will focus the plant's energy in growing the ball rather than making seeds.
You can also just pull off onions that are bolting or producing seeds pods and just eat the onions. It can be harvested at any stage, smaller green onions are harvested early on in the life cycle however if you want big onions you must wait for the plant to mature you will know the plants fully mature when leaves on the plants are beginning to die when the leaves fall over onions have produced the biggest bulb they can. It takes four-month to become mature onions.
*Information provided for guidance only, as cultural practices, climatic-circumstances, soil conditions may vary.