Hawthorn trees can live for several decades, with an average lifespan ranging from 20 to 50 years. However, some hawthorn trees have been known to live for over 100 years under favorable conditions.  The lifespan of a hawthorn tree can vary depending on species, environmental conditions, and management practices.  Proper care, including regular pruning, adequate water, and protection from diseases and pests, can help prolong the lifespan of a hawthorn tree.