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 ...

Q : The camellia pictured (see reader's photo) was planted approximately 18 years ago, along with another about 10 feet away. We kept them appropriately 6 feet high. They bloomed beautifully until the ...

In the year since the emerald ash borer was detected in Oregon, questions have been pouring in about what to do if an ash tree becomes infested and is killed by the invasive beetle. Currently, the ...

Without question or doubt, ashes rank as the most common and most abundant trees growing along our neighborhood streets and in our yards and parks. Elms rank much lower in abundance as street trees.

Something is quietly killing the Midwest’s ash trees. The culprit is small enough to fit on a fingernail, brilliant green in color, and so stealthy that most infested trees don’t show obvious symptoms ...