Bark beetles convert spruce tree defenses into more potent antimicrobials to protect themselves, but a fungus can neutralize ...

We were pushing through head-high willows along a brushy caribou trail, five days into our week-long trek across Alaska's Noatak valley, when my hiking partner, Brad Meiklejohn, startled me with a ...

You may have heard that pruning spruce trees in the landscape is an important way of maintaining their health, size, shape, and vigor. But this is more applicable to deciduous trees than evergreens.

Q: What's killing Colorado blue spruce trees? My parents just had one cut down in front of their house, which made me start to take notice to others dying in the area. I have noticed dying spruces ...

Many homeowners in northern Minnesota are asking the questions: Are my spruce trees dying? Should I be spraying something on them to help? Your spruce trees are not dying and it’s too late in the ...

In most Chicago suburbs, you can’t drive a block without seeing a spruce tree. Norway spruce, blue spruce and white spruce are among the most popular trees in the area, prized for their winter color ...

Trees contain valuable information about Earth's past, so much so that studying their rings may help fill in hidden gaps in ...

Years after New Englanders saw that acid rain caused by coal plants was killing red spruce trees, the trees are better. Researchers say the red spruce shows the positive impact of air pollution laws.

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