Planting onion sets in the spring is so easy! Onions love cool spring temperatures so you can plant them as soon as your soil is workable in early spring. We plant each set 4 inches apart and leave the pointy part showing above the soil. Once the green stems are 12 inches tall, you can start to selectively and harvest this scallions and use them in your cooking. If you want to grow a bulb large enough for cooking, you’ll need to wait until the greens start to wither at the neck where the onion m