Q • My oak trees have more large galls than I’ve ever seen on them, and I’m worried about their health. What can I do about ...

UC Santa Cruz tree worker Isaac Estrada works high above McLaughlin Drive next to the Core West Parking Structure as the UCSC ...

Darlene, who only wanted to share her first name, evacuated with her grandchildren, two of whom have asthma, and several ...

Red maple oak, quaking aspen, weeping willows, and birch trees are some of the seven fast-growing shade trees that can make ...

I noticed a lot of small twigs with leaves on them under my oak tree and became concerned about the oak. It is a large, ...

In a Swiss pine forest, the treetops are being sprayed with mist in a bid to discover the effect that drier or wetter air has ...

All tree leaves have an outer layer called the epidermis, which can also be used in the identification process. This leaf "skin" always has a waxy cover called the cuticle and varies in thickness.

Loren O'Rourke, Sacramento Tree Foundation Planting native oak species on underutilized urban public lands in Sacramento has a unique set of difficulties.

Kenya Creer, California State University, Long Beach, Department of Geography Through the acquisition, processing, and analysis of earth imagery, remote sensing has been at the forefront of mapping ...

A Maryland program to spot and document its biggest trees started a century ago. John Bennett is the man who keeps the ...

The children were part of the Capitol Junior Rangers program, a statewide initiative for children aged 7 to 12 to learn about ...

It is a natural tendency in many fruit trees, where a season of heavy fruit production (an On-Year) is followed by a season of extremely light or even no yield (an Off-Year), and vice versa.