DEAR JESSICA: I have had a wisteria vine for over 20 years. It's in a sunny location, and in all the time I’ve had it, it has only flowered once. Would you know why that is? — Rifky Warshaw, Far ...

Pruning this sappy tree in early spring is basically an open invitation for destructive fungus and troublesome pests — here's ...

Maple trees in urban environments show signs of stress due to the urban heat island effect. Impervious surfaces like pavement retain heat and disrupt water absorption, stressing trees and making them ...

The gardening season is rolling and if you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU Extension faculty and ...

Safeguarding your trees against pests is important to their health and longevity. Invasive species can wreak havoc by defoliating or infecting trees, and left untreated, can lead to loss of limbs and ...

Spotted lanternflies, the invasive pests that have spread across the Northeast after first appearing in Pennsylvania nearly a decade ago, may not be as harmful to forests and trees as initially feared ...