QUESTION: – What happens if you leave onions in the ground? – Tamara W. ANSWER: – If you forget to harvest your onions and leave them in the ground to overwinter, one of three things will likely happen to them. Some will rot, some will start to grow again in the spring only to bloom quickly, and some will start to separate into garlic-like sets, which can be planted and used to grow scallions in the spring. Overwintered onion sets, while great for growing scallion
