There are many different species of oak trees. Some of which produce acorns as early as 5 years. However, some may take as long as 40 years before they produce even one acorn! For most oak species, the age of the first acorn production is around 20-25 years. Some Fun Facts: Here are names and approximate amounts of time a few oak species take to produce acorns: *Scientific Name Common Name Number of Years Quercus alba White Oak 20 years Quercus coccinea Scarlet Oak 20 years Quercus macrocarpa Bur Oak 35 years Quercus imbricaria Shingle Oak 25 years Quercus  nigra Water Oak 20 years Quercus nuttallii Nutall Oak 5 years Quercus petraea Sessile Oak 40 years Quercus suber Cork Oak 12 years Quercus velutina Black Oak 20 years *Seeds of Woody Plants in the United States C.S. Schopmeyer and the Forest Service