I have two kinds of conifers in the front yard. They are in a spot with eastern exposure, but the sunlight is somewhat blocked by a big house on the south side of the yard. They get a lot of shade in the afternoon and evening, and the yellow is mostly on the part facing the house. However, last year, when planted they were green all over. I live in Chicago (we had a very long winter this year).
Why are they turning yellow and what can I do to make them healthy and green again?
Here are the pictures: