These buds are only produced on the ends of live branches. Each spring, spruce trees produce new shoots and needles from buds (needlecast pathogens enter the spruce through this young succulent tissue) that were formed the previous year. To make an educated plan for your declining spruce, you need to understand how a spruce tree grows. To be more specific, there are many different types of spruce, however, Colorado blue ( Picea pungens) spruce growing in Michigan have the largest array of potential problems.
If the tree you are concerned about isn’t really a spruce, the information in this article may not apply to you. If you aren’t sure what type of tree, you can refer to this MSU Extension article, “ Pine, spruce or fir: Getting to know Michigan evergreen trees.”Įach conifer has its own set of possible problems. This matters a lot and yes, there is a difference. Tree identification mattersīefore we get too far, it’s important to ask-do you really have a spruce? Not a pine, fir, arborvitae or any of the other conifers that grow in Michigan. In most cases, there is no silver bullet to cure the affected tree. The reality is not all ailing spruce trees can, or should, be saved. There are also countless phone calls and emails made to the lab, Michigan State University Extension educators and specialists. The Michigan State University Plant & Pest Diagnostics lab receives roughly 75 spruce samples a year from those looking to right all that is wrong with their spruce trees.
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