Beech leaf disease (BLD) is a quick spreading and often fatal disease that infects American, European, and Oriental beech trees. It is a microscopic nematode that feeds inside the leaf bud and kills it. Infected trees will have diminished leafs and thin canopies. This forces the tree to draw from its reserves to push out new growth. Repeated seasons of BLD create significant decline in the tree and ultimately leads to tree death and failure. While specialized fungicide and potassium treatments, aided with proper fertility, have shown beneficial results in combating BLD, unfortunately there is no guaranteed control measures.

Assessing a beech tree in Weston, CT
Infected trees will have stunted, discolored and over all thin and declining foliage. Closer examination will show dead buds, curled and chlorotic leaves. Die back in leaves will also be visible .
Trees that have been infected for multiple seasons will start to show cracking and blistering bark. This cause by beech bark disease which beech trees are more prone to once they begin to decline.
Beech trees begin to internally rot and decay. Visual inspection is difficult and will eventually lead to tree failure.