During dry weather, prune and remove dead branches and as many clinging cones as possible. The greatest source of inoculum comes from the dead, infected cones that hang on the tree or fall to the ground. Sterilize pruning equipment between cuts by dipping in a solution of one part chlorine bleach to one part water. Oil saws and pruners when finished to protect from rust. Keep trees healthy.
Weakened trees are more susceptible to disease.
Water during dry periods and fertilize if the tree lacks vigor. Spores of Sphaeropsis sapinea are ever present and can be found on the branches of most pine trees with the exception of white pine. The spores only infect trees in a weakened state. Use fungicidal sprays. Infection of new shoots can be reduced significantly with properly timed fungicidal sprays.