Onions do not develop
My aunt asked if I would run this by you guys. She has put out onion sets repeatedly but although the tops grow, the "bulb" never gets any bigger than what it was when planted. She plants on the south side of her house and composts regularly (she lives in Minnesota) and has an automatic watering system so moisture shouldn't be an issue. I've never had a problem getting onions to develop so I'm hoping someone out there has some ideas.