The bark is thoroughly sprayed before the spring flight of the beetle, and during the summer to prevent summer flights from attacking the tree. This program includes 3 sprays.
- Pines and Spruce, very rarely Douglas-fir
- Usually attack weakened trees of all sizes, such as recent transplants, tops and limbs of mature trees already attacked by other bark beetles, trees injured by construction or topped during powerline clearing, drought-stressed, or over-watered trees.
- A yellowish or reddish brown borering dust in bark crevices or around the base of tree is indicative of Ips attack
- Bluestain fungi are introduced into trees by adult beetles.
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