Q.Planting onion sets.
hi, in your article
https://www.gardeningknowhow.com/edible/vegetables/onion/onion-bulb-formation.htm
you mention that onions are biennials (first year bulb, second year seed). but then you tell readers to plant “onion sets”, which are already one year old bulbs, having been planted the past season by the grower. to get first year, annual bulbs from onions, plant onion seedling/plants (started this year by the grower), available from garden/home centers. a bit most costly, but gobs more onions. even better, start onions indoors from seed under lights. they are slow growers, so start well ahead, even 3-4 months. onion roots are very forgiving. start in cells, develop strong roots and transplant into the garden at the same depth as the plug. that way the bulbs form naturally at the correct height. planting onion sets is a waste of time and money. terry
Growing from onion sets is a topic covered in this article.
https://www.gardeningknowhow.com/edible/vegetables/onion/onion-info-tips-for-growing-big-onions.htm