MADISON – For more than a century, biologists have been working to assign plants, animals and microbes their respective places on the tree of life. More recently, by comparing DNA sequences from a few ...

Low-cost “tree fitbits” can pinpoint the precise timing of tree activities, like spring bloom or autumn leaf change, according to a new CU Boulder study. Researchers outfitted two East Boulder ash ...

What a cold week it has been! While I may not be the biggest fan of how cold it has been, a little bit of consistency has been nice. This winter has felt like such a back and forth. From freezing days ...

I recently participated in the Minnesota Shade Tree Short Course, which is a two-day professional development conference for tree care professionals sponsored by the University of Minnesota. More than ...

When arborists evaluate trees, whether it is a few trees on a home ground or many on a large commercial site, it is critical to note health condition. We commonly score the health factor with a range ...

When ash trees started to be removed in St. Paul, Mary Heskel began to wonder. The Macalester College biology professor knew, of course, that the trees — one of the most widely planted in the city — ...