Experts and BHG readers answer.
Why won't my fifteen year old Saw Tooth Oaks produce acorns?
I have several Saw Tooth oak trees that I planted about fifteen years ago. They are healthy but have never produced a single acorn. I was told that they would produce acorns within five to ten years. I would like to know why this is happening and what I could do to get them to produce some acorns.
Some trees mature more slowly than others. It's not unusual for oak trees to take 15 or even 20 years to bear acorns. Often, they'll produce acorns a little sooner if they are slightly stressed. Avoid giving the tree too much fertilizer, which promotes vegetative growth and delays flowering and seed production.