Oregon scientists have spent decades figuring out which trees can survive invasive blister rust fungus, which has wiped out ...

A scientist helps save Crater Lake’s whitebark pine trees from an invasive fungus. In 2002, “Oregon Field Guide” told the story of how an invasive fungus called blister rust was killing Crater Lake's ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This photograph, donated in 1922 by ...

Last year my Bradford pear’s leaves were covered with rust fungus. What can I do this year to prevent that from happening again? CS You are correct. It seems like rust disease was everywhere last ...

Fall is here and all of those end-of-season projects are looming. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service.

Q: We live on acreage just south of Little Rock. I'm attaching several photos taken today (March 7) of two large cedar trees that have grown naturally on my property (see reader photos). They are at ...