We carefully collect acorns to grow up to sizes for people to purchase and plant so that they can have more oaks trees on their property. Acorns planted would do the job if those busy critters don't munch your tree as a snack. The Quercus lobata or Valley Oak and the Quercus agrifolia or Coast Live Oak are both fairly fast growing oak trees. The Q. douglasii or Blue Oak though is slow growing. We have some that are crossed in nature with the Valley Oak and it is much faster growing (than straight Blue Oak) called Jolon Oak. It is CUTE!