We recommend for greatest pollinization to plant 2 or more varieties. For larger planting we recommend planting alternating rows. Example: 6 rows variety A, 6 rows variety B. Planting Sets wider than 80 feet of one variety will decrease pollination. Generally when planning your orchard you want to put varieties together that bloom at the same time. For example Early Bloom Varieties with other Early Bloom varieties. The flowers are open at the same time and allow bees to cross pollinate to produce fruit. Another option is to add in crab apple pollinizers to your orchard to pollinate the varieties.