Vaccinioideae is a subfamily of flowering plants within the family Ericaceae. It includes various genera, such as Vaccinium, which is known for producing fruits like blueberries and cranberries. This subfamily is primarily found in temperate and tropical regions, thriving in acidic soils. Members of Vaccinioideae are characterized by their evergreen or deciduous leaves and often produce bell-shaped flowers. These plants play a significant role in their ecosystems, providing food for wildlife and contributing to soil health. They are also cultivated for their edible fruits and ornamental value in gardens.