Poison ivy, oak and sumac all can create itchy rashes from urushiol. What you need to know before the rash starts.

Poison ivy, oak and sumac all can create itchy rashes from urushiol. What you need to know before the rash starts.

Tree of heaven is highly invasive and incredibly difficult to eradicate. Learn how to control ailanthus and manage its ...

The Agriculture Department at Pierce College is an important part of its history, having been the focus of its founding. So, it should be a ...

“Ailanthus altissima (also known as tree-of-heaven, paradise tree, Chinese sumac, stink tree or just Ailanthus) is a native of China. In North America, Ailanthus is a non-native invasive plant ...

These trees can also trigger allergies due to their high pollen production. In place of tree-of-heaven, consider planting staghorn sumac (Rhus typhina), green ash (Fraxinus pennsylvanica), or ...

Many who have visited the tree over the years have posted photos on social media alongside musings about the tree as a sign of hope, a symbol of nature’s resiliency and an inspiration to stand ...

The Western Pennsylvania Conservancy is using herbicide to kill tree of heaven trees to combat the spread of spotted lanternflies. The invasive insects threaten the regional grape industry.

Most Napa Valley residents recognize the plant known as tree of heaven when they see it sprouting wild in fields, taking over their gardens or defiantly establishing itself in sidewalk cracks.

As the boat zipped down the Chicago River on a nippy November morning, Sammie Clark stood up and pointed at a creature swimming in the water, its brown fur slick and its head bobbing just above the ...