Onions have seeds, which are the fruit part of the onion. After the onion blooms, the fruit is the seed of the onion. Onion seedlings take 8-9 months to mature, usually around the end of the season. It almost catches up with some summer crops like wheat and garlic.
Onion Seed Look
The shape of the onion seed looks irregular, with a slightly raised surface, fewer folds, and a deep navel depression. Onion seeds are shield shaped with slightly more irregularly wrinkled skin and deeper navel depression. The thousand-seed weight of onion is 4.6 grams.
Onion Seed Planting
Onions are best planted in September-October. This is when the weather is cool in most areas and germination is high. If onions are planted higher, temperatures will be higher and germination will be slower. Onion seeds should usually be chosen for the current year, soaked in warm 50 degree water for about 4 hours, then removed and dried to plant. Then water the soil, cover with soil and plastic film, and germinate in a week.