Hi all. I have a Shindeshojo JM which is new to my garden. I planted it carefully, it is a mature tree (about 5' tall and 6' wide) and was almost fully leafed out when I planted it. It is in a partly shaded position, and only gets direct sun in the early afternoon for about 2 hours. It has been in the ground for about 3 weeks now. I have noticed in the last week that the tips of all the branches where new baby leaves were unfolding have shrivelled and dried up! We did have the first hot days of the year here over the last week. I have been watering the tree twice weekly as per instructions. What could be causing this? Is it just the sun exposure? Will the tree "get used to it" or "harden off"? Any insight is appreciated.