Hello, I have a young guava plant I bought in a 7gallon pot & planted about 3 weeks ago. It seems to be doing well, however, every time I go to water it (2× per week), I see about 3 or 4 leaves yellowing, which I usually cut off & throw away. Can anyone tell me cause & how to prevent?Plant is little less than 6ft, seems to be healthy with lots of leaves & new ones developing. I planted about 3 weeks ago, added planting soil+compost mix with some native soil. I am in Houston TX, soil here is somewhat clay-ish. I also added organic fertilizer at the time of planting in the ground. Weather is mild with about 75/80 degree.