Where are you growing yours, all sorts of conflicting data online. I personally know of two trees, one being grown in Tampa and never covered and another New Port Richey both 9Bs and Ill be in 9A but still considering it.
Ive talked with someone in Arizona that supposedly has one in his yard a couple of years in 7B. I dont know about that but Id like to hear from people that have them in the ground and their location
Companion Planting Guide by World Permaculture Association