If your evergreens look as sad as as the one in this photo, you might be understandably concerned. I have a few things to say about this.
First, are you gardening in a drought area? If so, try not to stress. Because while this amount of yellowing is NOT normal on an evergreen, if you have been gardening in a drought area, this could be normal for you this year.
All evergreens shed needles, roughly 1/3 of their needles each year. That’s perfectly normal. But trees under stress, such as drought stress, are likely to shed additional needles.
So what should you do? Keep the tree watered. Deep irrigation is better than a few little soaks with a garden hose.
Don’t fertilize. Don’t add to the tree’s stress by fertilizing . That holds true for any plant, or even a drought stressed lawn.
And finally understand natural cycles and what is “normal ” and what isn’t. That should help you feel better if your evergreens–either broadleaf or needled–suddenly have yellow needles or leaves.