Within three months, a shipment of small branches arrived in California. The branches carried not only cottony cushion scale, ...

The discovery of Mediterranean oak borers in Novato has prompted an alert by the county agriculture department.

The discovery of Mediterranean oak borers in Novato has prompted an alert by the county agriculture department.

Agriculture officials in Marin County are alerting property owners and arborists to be on the lookout for a tiny invasive beetle that attacks oak trees, after the insect was detected last month in ...

Most of the Joshua tree’s namesake park isn’t considered a future refuge for the species — climate models predict that the vast majority of the park will no longer be suitable habitat for ...

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

The spotted lanternfly is another problem bug. It feeds on grapes, apples, pears, maple trees and the tree of heaven, which is another invasive species.

The spotted lanternfly is another problem bug. It feeds on grapes, apples, pears, maple trees and the tree of heaven, which is another invasive species.

More than 90% of popular freshwater game fish in Southern California contain an introduced parasite capable of infecting humans, according to a new study by researchers at UC San Diego's Scripps ...

More than 90 percent of popular Southern California freshwater game fish sampled in a new study contained invasive worms capable of infecting humans, scientists warn. The parasites — two species ...

With Utah’s dry climate and extreme weather, Utah faces many of the same wildfire threats as California in January. Could Utah be next?

“It is probably one of the worst invasive insect pests we’ve seen in North America in our lifetime,” said Clemson Professor Dr. David Coyle. “It kills any ash tree it comes into contact with.