Japanese black pine trees may be visually stunning, but growing them successfully entails knowing know what pests and diseases they're most susceptible to.

Do you have a mature pine tree with bunches of brown needles? It may be suffering from a fungal disease called diplodia tip blight. “Diplodia has become more common due to environmental stress ...

Often following a cold dry winter and before new shoot growth begins, needles on the side of the tree facing prevailing winds will brown.

The whitebark pine is a hardy tree that grows in an area stretching from British Columbia, Canada south to parts of California and east to Montana. It's a keystone species in its subalpine and ...

Many people in southern New Hampshire have noticed the needles of white pines turning yellow and brown this spring.

The fungus trades the nitrogen with the host tree, which supplies carbon to the fungus. In this way, white pine trees are acting indirectly as predators, Klironomos said.

“And yet they do all this absolutely essential stuff.” Indeed, this particular fungus, Suillus sibiricus, may help save the whitebark pine — with a little help from Cripps.

Now this spring, another problem is affecting loblolly pine trees. The Alabama Forestry Commission (AFC) is cautioning forest landowners about brown spot needle blight, a fungal disease that ...

Tamarack has a narrow trunk that is covered with thin, gray bark on younger trees and red-brown, scaly bark on older trees. The tree reaches heights of 50 to 75 feet, is conical-shaped, and has a ...

Here’s where that scientific journey has led. Pine trees at risk I of a fungus called Fusarium circinatum in 2009; it was the first fungal genome sequence to be conducted on the African continent.

Diplodia tip blight is a fungus disease that kills the new growth on susceptible species of pine trees. The obvious sign of diplodia tip blight is seen in spring, when new needles at the tips of ...

A: The appearance of brown needles on pines has several different causes, and it is important to diagnose the problem accurately because all treatments are different. A good way to classify these ...