The type of tree known for producing acorns is the oak tree. Acorns serve as the nuts of oak species, acting as a vital food source for many animals, including squirrels, deer, and various bird species. Oak trees are foundational elements in many ecosystems due to their size and longevity, providing habitats for numerous organisms. They are also significant culturally and historically, often representing strength and endurance. Various oak species exist globally, and acorns play an essential role in forest regeneration and the overall health of woodland habitats.