I just planted 1 1/2 ft. Tall janed gold arborvitae. I live in central Virginia, and our soil is clay. I planted the bushes in a 2-1-1 mix of top soil, peat, and compost. I have been watering every other day probably a gallon of water. October can be warm still here and I noticed the inside of the bushes are brown, while the outsides are green with some new growth on the tops of each bush. My question is, am I watering too much or too little?