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 ...

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 ...

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 ...