Avocado Dense Planting

If you look closely, you'll see I planted two small avocado trees about 18" from the center larger avocado tree. I just saw a youtube video by Dave Wilson Nursery on dense planting of fruit trees. They say that "all" fruit trees can be controlled by summer pruning. The idea is to get several varieties in a small space to increase pollination and to space out fruit harvest. All three are unknown  varieties, one by seed, and the other two from rootsock where the top branches died in the winter. Once they are older, I will try my hand at grafting named cultivars on to them. For now my job is to nurture the roots and not worry about what's growing on top.