New Persimmon Tree Not Doing Well
I planted this fuyu persimmon at the end of March, on a fully exposed sunny slope in San Diego. It was mulched and watered every 2-3 days depending on the weather. (click for larger images of leaves)
At the end of March, flowers appeared:
But now, the tree has lost some leaves, the remaining leaves have yellow borders and some are mostly yellow.
It is on the same watering schedule as a lychee and wax jambu and asian pear that I planted at the same time, all of which are thriving.
I tried watering with Foliage Pro weakly weekly for the last few weeks trying to reverse whatever is happening, with no improvement. The mulched soil is moist underneath. Am I watering it too much, too little?
Any thoughts as to what the problem is and how to fix it? Or should I give it some benign neglect and not worry about it?