Find out what types of oak trees are best for your growing conditions ... Bur oak (Quercus macrocarpa), 60-80 feet tall and wide, Zones 3-8; and gambel oak (Quercus gambelii), 20-30 feet tall ...

Oak trees are a keystone species across the country ... post oak and blackjack oak for the Great Plains; and Gambel and scrub ...

The best way to find our state insect — the Colorado Hairstreak butterfly — is to first find a Gambel oak tree, where said butterfly prefers to spend its time flitting around and dining on ...