Trees are more likely to be damaged by flooding during the growing season than during the dormant season, according to ...

An aggressive hatch of Douglas-fir tussock moth caterpillars is threatening trees, both in national forests and in Santa Fe.

During a particularly hot afternoon in June, my staff and I were walking a shaded trail at Garden in the Woods in Framingham ...

We saw die-back in trees coming out of winter. In some cases, it is environmental stress from drought stress and winter ...

All over eastern North America right now, chestnut breeders are pollinating tree flowers. "So here is actually some flowers," ...

This oak was planted a few years ago. Initially it was diagnosed with sun scald. Despite measures to try to help it, it just ...

Over the last 20 years, the main drought conditions have reduced sap production, which helps to protect the Torrey Pines from insects such as the Bark Beetle, which is a vector for the Pitch Canker.

The wail of the chestnut tree lover is heard from all parts of New York, Long Island, and adjacent country. Thousands or trees, amounting to millions of dollars in value, are dying, the victims of ...

The disease can cause sunken, oozing cankers in the bark of the tree. The cankers can expand over time and girdle branches, killing them. This disease gets into trees through wounds in the bark.

As more cankers form, the branches die and eventually, the entire tree dies. The beetle and fungus can be transported into new areas in walnut logs, firewood, and staves used for woodworking.

Dogwood trees, although beautiful in full bloom, are quite vulnerable. Here are reasons to reconsider planting one and what ...

The rot is caused by a fungus that attacks the tree's bark, with apple and pear trees being the most common victims. If not treated, canker can kill a tree in one season and spread then to others.