Conifer Disease Key

Conifers are trees that bear cones, typically have needles and are often referred to as evergreen trees. Conifers are common throughout the Iowa landscape, and are especially popular as windbreak trees.

The following key is intended to help guide you through the identification process of common conifer problems and how to collect samples for confirmation. This key does not include all disease or pest problems. Many conifer diseases cannot be confirmed without a microscope, so getting the tree diagnosed by submitting a sample is the typical recommendation before starting a treatment regimen. Getting confirmation would ensure that the treatment regimen you implement is the correct one, which in turn may save you money, time and possibly your tree!

If you have already collected a sample and just want sample submission instructions, click the submit a sample button below.

What type of tree is having a problem? Not sure? Try this link (If the link does not work right click to open in a new tab)   

Select the best option below: