Technical Terms European canker: A fungal disease affecting apple trees, characterised by cankers on trunks and branches that can lead to dieback and eventual tree loss.

According to the Royal Horticultural Society: "Apple canker is a disease caused by a fungus, Neonectria ditissima, which attacks thebark of apples and some other trees, causing a sunken area of ...

We saw die-back in trees coming out of winter. In some cases, it is environmental stress from drought stress and winter temperature extremes. It also may be a canker disease.

If left to their own devices, most apple trees grow into large, globe-shaped trees, with the best fruit forming on the tree’s outer perimeter, high above convenient apple-picking height.

Fire blight damage is a common problem with apple and pear trees in most of Virginia and West Virginia. Varieties such as Gala, Jonathan, Granny Smith, York and Jonagold are particularly susceptible ...

If fire blight is not treated from the year before, overwintering cankers can appear on branches. They will be black, gray or violet in appearance. If pruned, they may have reddish flecking on the ...

Sooty canker disease attacks many different plants but seems to favor mulberry, poplar or cottonwood, apple trees and yours. It is called sooty canker because the dead wood, just under the peeling ...

OSU Extension Service experts answer readers' questions about pruning apple trees, repotting plants, treatment for ailing trees and more.

The fruits of the crabapple trees are often hosts for a variety of different fungal infections, including apple scab. The bark of the tree is often a host for fungal infections as well, including ...

Is your fruit tree looking sick or bearing bad fruit? Fruit tree diseases are common: Here's how to identify the problem so you can effectively treat your tree.