My Tree Onions (Egyptian Walking Onions) have done too well this year. I have about 12 sets of bulbs I am willing to send out to forum members at no charge, just PM me. I will post when they are gone. Tree onion - Wikipedia, the free encyclopedia You can eat the onion, bulb and stalk. They reproduce easily and are drought resistant (in my experience). These overwintered through 2 feet of winter snow and - temps. They are hardy and supposedly good for zones 3-9. My elevation is 2000 ft. I keep just a couple going to have a decent planting stock always available. These are sprouted and need to be planted right away.