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

Forty people from 18 countries became U.S. citizens during a naturalization ceremony on June 13 held beneath the 'Big Tree' at Redwood National and State Parks.

Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 12cm ( about 5 inch) 22 gauge ( wire diameter 0.4mm ) : 30cm ( 12 inch) ...

The Joint Genome Institute (JGI) is a DOE Office of Science (SC) national user facility operated by Lawrence Berkeley ...

One simple and accessible fix is to plant more trees. Diana Beresford-Kroeger, a Canadian botanist and author, says if we ...

California’s iconic trees are so well appreciated that three national parks are named after them: Redwood, Sequoia and Joshua ...