Christmas trees are grown as a farm crop. It takes several growing seasons before a Christmas tree is ready to harvest.

In anticipation of a hotter, drier climate, foresters across the Pacific Northwest have been testing new species of trees.

In the lumber-centric Pacific Northwest, Douglas and noble fir are the classic choices for a Christmas tree — aromatic, good for ornaments and able to last a few weeks. But with hotter and drier ...

Plants that drop all their leaves at one time and enter a leafless, dormant state are called deciduous. In climates that ...

Mistletoe infestation was not linked to negative health outcomes for the trees the festive favorite was parasitizing.

Wisconsin officials are on high alert as an invasive species could threaten millions of trees in the state. The hemlock ...

They're natural features that look like they were painted on! Dan Smith is "barking" up the right tree, with the science ...

Avoid these six invasive trees that harm native ecosystems and create long-term problems in Southern yards. Learn what not to plant—and what to grow instead.

The Missouri Department of Conservation (MDC) is alerting residents around Missouri of the oppournity of donating their live Christmas tree after the holiday. According to a ...

LAPEER COUNTY, MI – This giant sugar maple tree stands in the middle of farming fields. It could be a new Michigan champion.

Holiday greenery and Christmas trees bring joy throughout the season, but they can also hide dangerous pests. Diseases and invasive species can make their way into our landscapes on trees ...

A rare fossil plant reveals how early plants moved water and food, helping to explain the secrets of tree growth.