The cooler temperatures of autumn are approaching and while humans are putting on extra layers of clothes, evergreens are shedding their old needles. This annual occurrence is called “Seasonal Needle Drop” and is completely normal. Think of it like people shedding their hairs.
So don’t panic when the needles on the inside of the tree turn yellow or brown and then fall off. This seasonal transition is most noticeable on looser evergreen forms like pines but, whether you have spruces, arborvitaes, or junipers, they all do it.
New growth will continue on the tips of the branches next year.
Learn about Winterizing Evergreens.