Hi

I'm asking for my mom. Orange County, zone 10. Her 3 yr old, in ground, Haas got a whole bunch of fruits to form earlier this year - but her fruits kept dropping, eventhough already at the size of a pingpong ball. She only have perhaps 6-7 left on the tree now :( hoping these will stay. Natural shedding/thinning of baby fruits are ok, but this seems a little more than expected. Other than that, her tree look very strong and healthy, the fruits look strong and healthy as well - no obvious sign of disease. Do you guys know what could be wrong? perhaps with the soil or watering pattern? I'll post a pic of the tree when I get a chance.