@anne_twainIt's a young tree, but was so loaded with fruit it was losing branches. We have three mason bee houses (Blue Orchard Bees, BOBs), and they have colonized a drying, stickered stack or Port-Orford Cedar as well. I asked for a Gravenstein apple tree from my husband, and found that several apples I wanted were not self fertile but could be pollinated by the Dolgo Crabapples. The early mason bee varieties have boosted our plums, cherries, and apples. Haven't seen any wilt or diseases yet.