A blight-stricken tree is a tree that has been infected with a disease or pest, causing it to become weak and unhealthy. The most common type of blight-stricken tree is an ELM, which is a deciduous tree that can be found in many parts of the world. Blight-stricken elms are particularly susceptible to fungal diseases, such as Dutch ELM disease, which can cause the tree to die if not treated quickly.