I have a deodar cedar that was brought inside the house for a few days during a very hard freeze. I put it back outside during the day after temps got into the 40's and it spent the night outside in the lower 30's without much wind and then another night in the 40's. Then almost overnight, the tips of almost all the needles are brown w/ the worst ones being on the crown. I have it planted in a well draining mix and have only been watering the soil when its dry. Anyone have any ideas as to what may be the problem?