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Question from unknown -

What tree is this?

Answer from Dr. Mike Kuhns, USU Extension Forester and Professor -

Turkish hazel tree (Corylus colurna). Some trees take many years or even decades to reach sexual maturity, which includes flowering and bearing fruit. Most are grafted, which greatly speeds up the process, but especially when they are grown from seeds it can take a long time. Pinyon pines, for example, can take up to 30 years to bear cones and seeds.