Mountain Pine Beetle
Mountain Pine Beetle may have become less important in the last few years but some of its close relatives are just getting started.
These spruce trees are showing the first stages of Ips Beetle attack, where the top starts to turn brown. Ips has been increasingly common in Fort Collins and Loveland since 2015. Complete preventative control requires two trunk sprays per year.
Spruce Beetle (Dendroctonus rufipennis) is even more devastating than Ips Beetle and can quickly kill healthy spruce trees. It has so far been most common in South and central Loveland. This bug requires an annual summertime spray to prevent attack.