Conifers are important components of our nursery and landscape industries. Unfortunately, conifers have been experiencing many debilitating and decline issues in recent years. It is vitally important that we be able to distinguish among non-lethal vs. lethal problems, diseases vs. pests, and cultural vs. environmental issues.
What’s the difference between white pine decline and white pine root decline? How do we differentiate needlecast diseases from Phomopsis and Cytospora cankers of spruce? Making an accurate diagnosis is necessary before implementing the proper management practices necessary to preserve the health of our conifers in Michigan landscapes and nurseries.