Water your plants daily during drought situations and if in doubt as to the cause call us , another professional, or your County Agent. This occurs from the inside of the tree in the fall. It is a natural occurrence, and nothing to be concerned about. Be careful if treating on a windy day, and be aware when your neighbors lawn is being treated, especially if windy. Also, soil sterilants used to control weeds in driveways and fence lines can travel for 10 or more feet underground and seriously damage or kill a tree.
Symptoms often resemble disease in early stages.
Usually more devastating to young or tender plants. Sudden drops in temperature are more damaging than gradual decline. The worst scenario consists of warm winter temperatures then sudden cold spells, then back to warm. Not unlike the winters we've been having lately. Winter drying is the most common cause of injury to pines.