Crataegus Aestivalis, commonly known as the mayhaw tree, is a species of hawthorn that is native to the southeastern United States. This small deciduous tree is known for its tart, bright red berries that ripen in May and June. Some synonyms for Crataegus Aestivalis include mayhaw, swamp hawthorn, and thornapple. The mayhaw tree is a popular ornamental species due to its showy white spring flowers and colorful berries, which are used to make jams, jellies, and other culinary delights. The mayhaw tree is also valued for its hard, dense wood, which is used for tool handles, fenceposts, and other durable products.