A potentially devastating disease epidemic is attacking our region's most common evergreen trees. Colorado, Black Hills and Norway spruce have long been planted in yards and shelterbelts. Most of ...

In the past year, Bargerstock said his company has treated more than 2,000 infected trees, which is unusually high. “This is reminiscent of the emerald ash borer disease a few years ago,” he said.

Cytospora canker is a disease of mature spruce trees, usually older than 15 years. Trees are most likely to be infected if they are planted too closely together or if they are stressed, Yiesla said.

Purdue Landscape Report: We receive a large number of spruce samples each year at the Purdue Plant and Pest Diagnostic Laboratory (PPDL), with the vast majority being from Colorado blue spruce with ...

Purdue Landscape Report: Colorado blue spruce is not native to Indiana (no spruce is!), and it often suffers from environmental stresses such as drought, excessive heat, humidity, and compacted or ...

In recent years, most all spruce varieties have been having difficulty fighting off the fungal disease Rhizosphaera needle cast. This fungal disease causes premature death and casting of needles ...

Depending upon how long the lower branches of your tree have been affected, an application of a fungicide containing chlorothalonil applied 2 or 3 times per season for 2 to 3 years might be ...

Q: I have a huge blue spruce tree in my yard. I am noticing that there are dead branches scattered on the lower part of the tree. They are dead from the trunk to the tip. There are patches of what … ...

Discover the major common tree diseases in the United States. Armillaria attacks both hardwoods and softwoods and causes either yellowing leaves or browning needles. Wood that is decaying from ...

Of all the tree issues that concern property owners, unquestionably Colorado blue spruce and the green variety of Colorado spruce year after year top the list. Enjoy unlimited reading on ...

Now, diseases are killing blue spruce trees across West Michigan and trees are declining at a rapid rate. Weather: Check out the latest forecast on News Channel's weather page.

A new study highlights oak, cherry, pine, larch and spruce trees as "high risk." The post Pests and diseases threatening to slash tree growth by 2050 appeared first on Talker.