Is it thumbs up or thumbs down for tree-of-heaven (Ailanthus altissima), now standing out among the general greenery for the mops of yellowish or orangeish seeds capping its stout branches? Thumbs ...

Throughout Madison County, much of our forest is dominated by a tall, pale-barked tree that grows ramrod straight. Often called “yellow poplar” by loggers and sawmill owners, it’s also known as “tulip ...

Tree-of-Heaven is an invasive species, but now researchers may have found a way to control it. Researchers at USDA report finding a potential natural enemy for Tree-of-Heaven in France. It’s a mite ...

Tree of heaven (Ailanthus altissima) is a fast-growing, prolific seed producer that was listed in Minnesota as a Restricted Noxious Weed beginning in 2017. It is native to China and was brought to ...