Walk With a Friend at Tualatin Hills Nature Park: 9 a.m. first Wednesday and third Sunday of the month. Take a guided walk ...

The final part of our best-new-plants-of-2025 series concludes with a look at some of the top new trees and shrubs debuting ...

Identifying a dominant leader and cutting away any competing leaders when a tree is young will allow it to grow more robustly ...

Blue growth rings in woody plant stems indicate years when cells failed to lignify properly due to summers that were too cold ...

It is easy to take these trees for granted but they are teeming with biodiversity and are an integral part of Houston's ...

Volcanic eruptions and cold summers leave lasting marks in the wood of northern trees, unlocking the secrets of past climate extremes.

Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth ...

As forests continue to be cleared and forested landscapes degraded by human activity, their loss can significantly affect the ...

The Malus coronaria learned to fight frost by blooming two or three weeks later than the trees that produce cultivated ...

The scientists collected core samples from 25 Scots pine trees and stem discs from 54 juniper shrubs, creating paper-thin ...

Idaho residents need Star Cards or other federal ID to fly starting May 7. Currently 53% have compliant ID. DMVs offer Star ...

A new register seeks to identify "champion trees" in the United States, recognized for their enormous size and big leafy ...