Question
I live in Omaha, Nebraska.  This Spring, our landscaper planted several Holmstrup Arborvites along fence for privacy.  Two are turning light green with what looks like a yellowish tint to their leaves.  I water them but maybe not enough or too much??  I've been using a soaker hose for a couple hours every other day.  Also, my Skyrocket Junipers are turning brown.  They are approximately 6 yrs old.  This is the first year they've done this.  Thank you for your expertise and time.

Answer
Sounds like you maybe over watering them. Too much water can be as bad for the tree as too little and will cause the same foliage problems. A tree needs 1 inch of water per week. I would check the soil under the trees and when it dries out to about three inches deep then water. Water once a week with 1 inch of water-place a pan under the tree and turn the sprinkler on or in your case put the pan under the soaker hose and when the pan has 1 inch of water in it stop. If you have not done so mulch around the trees with not more than 3 inches deep of organic mulch not piled up on the trunk. This will help hold the moisture around the roots.