Trees, especially pine trees, are in for challenging times. Although pine trees are relatively drought tolerant, ongoing drought, as we’ve experienced in Marin County for several years, has caused ...

Add Yahoo as a preferred source to see more of our stories on Google. Bark beetles are dark flying insects about the size of a grain of rice that leave tiny holes in the bark and branches of trees.

Add Yahoo as a preferred source to see more of our stories on Google. Native Pine Bark Beetles are found under the bark of local pines. The location on the tree will help determine which of the five ...

Throughout the year we receive many pine bark beetle calls. Pine bark beetles attack and kill pine trees that have been stressed. The three most common stresses for pine trees that invite pine bark ...

Property owners and tree care professionals who recognize the early warning signs can often prevent more serious damage later in the season.

Add Yahoo as a preferred source to see more of our stories on Google. Trees produce antibodies against harmful fungi. But bark beetles absorb these antibodies and use them to their own advantage. And ...

An international research team demonstrates that the European spruce bark beetle (Ips typographus) uses volatile fungal metabolites of plant defense substances as important chemical signals in their ...

Bark beetles are currently responsible for killing an unprecedented number of trees in forests across Europe and North America. Why the beetle populations first explode to decline naturally after a ...

Fungi may help some tree-killer beetles turn a tree’s natural defense system against itself. This fungi-made perfume might explain why bark beetles tend to swarm the same tree. As climate change makes ...

A dead pine in the Black Hills of South Dakota, June 2013. The pine has the characteristic popcorn-like pitch tubes indicating beetle infestation. CATHY WURZER: It's Minnesota Now here on MPR News.