Onions are edible bulbs. They are members of the allium family, along with chives, garlic, leeks, shallots and ornamental alliums. Onion bulbs are round or oblong and are composed of concentric layers

I am so glad I found out the easy trick and the 6-inch rule for my fruit trees. It has made all of the difference in the world and finally have flourishing, delicious fruits. This is one of those gardening tips to NOT MISS if you have fruit trees!