Average Height: Blackjack oak is a small tree, generally 20-30 feet tall.
Average Width: No data
Leaf Description: Leaves are 5-8 inches long, appearing thick with three shallow lobes, each ending in a bristle tip. The upper surface is a shiny green color, the underside appears to be covered in orange brown hairs.
Bark Description: Blackjack oak tree bark is very dark - almost black - and rough.
Twig Description: Blackjack oak trees have stout, dark brown twigs with reddish brown buds that are sharp, and fuzzy.
Gypsy moth larvae defoliate trees leaving them weakened and vulnerable to secondary fungal and insect invaders. Gypsy moth will affect trees in natural settings, forest plantations, and urban environments, often defoliating thousands of trees in a single outbreak. More…