The Tree-of-Heaven (Ailanthus altissima) is a serious ecological threat, destroying the value of land because it grows fast, out-competes desirable plants and poisons the soil with toxins exuded from ...

Last August, I penned an article about identifying tree-of-heaven (ToH), a favorite host of one of Indiana’s newest invasive insects, the spotted lanternfly. Recently, Purdue Extension has released a ...

When early gardeners first brought tree of heaven to the United States, the country itself was less than a decade old. In the hundreds of years since, this ornamental tree has spread itself far and ...

In a new study, researchers from Penn State have uncovered exactly how dangerous Ailanthus is, calling it an invasive triple threat. But what is this weird tree? Native to much of China, Ailanthus – ...

PORTLAND, Ore (KOIN) — Reggie Williams had a Tree of Heaven in his Northeast Portland yard. But the City of Portland actually says it’s “an alien plant invader” that has “cracked foundations, shifted ...