Ollie, I fertilize with a balanced fertilizer that has calcium and potassium. So I don’t think it’s a nutritional issue. Plus I have a thick layer of mulch and I use composted chicken manure. I think for me, because my location is so marginal for mangos, it is an issue of not enough heat, or too short of a growing season some years.
Johnny, you have an ice looking tree. You are off to a good start.
Sapote, yes powdery mildew is a problem on all of my mango trees but especially the Lemon Zest. In years past I have sprayed Sulfur and Copper, which helps a lot. But last year I didn’t spray and I still got a lot of fruit on the LZ. My trees bloom and bloom and bloom. They probably bloom from December to July. So even though powdery mildew is a problem a couple fruit develop from each bloom. These early mangoes usually die from disease. The mangoes that develop starting in about May or June survive to full size. Good luck with the Edwards!
Bill