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Frequently arborists will get a call to check out a pine for mountain pine beetle and find IPS beetle. The IPS beetle doesn’t seem to be as aggressive as MPB and doesn’t seem to swarm into epidemics in the same way. IPS are distinguished by:
- sawdust at the base of the tree
- attacking spruce and pine
- activity in early spring with two or more generations per year
Tree’s can survive an IPS infestation if treated soon afterward, mountain pine beetle infestations are not treatable and condemn pine trees to an early demise.
I qualify that with this final thought. The initial pine beetle infestation must be successful.