One of our most popular offerings, our White Onion Sets are easy to grow and produce high yields of large, white bulbs that are excellent for slicing, salsas or cooking into your favorite recipes. The bulbs are crisp and fine grained. They can also be harvested at the immature stage for green onions. Onion sets are dormant bulbs that are very easy to grow. Just plant directly into the ground. Most gardeners space them about 2-3 inches apart and thin them, using the immature onions as green onions. 80 ct. sets. Onion sets are not available in ID, WA.