Three Varieties of Oak Trees

English Oak Trees.

English Oak acorns.

English oak acorns are oval, ~1 inch (2.5 cm) long, and have a distinctive cap covering about a third of their length, appearing on a long stalk that gives the tree its name (Quercus robur). These acorns, which turn from green to shiny brown as they mature in autumn, are an important food source for wildlife.

Garry oak (Oregon white oak) acorns are round, smooth, and coffee-brown when mature, falling in the autumn. They serve as a vital food source for wildlife and are a keystone species in their ecosystem.  

The scarlet oak (Quercus coccinea) is a fast-growing, deciduous tree native to eastern North America, known for its vibrant scarlet fall foliage and glossy green leaves. Growing 50-60 feet tall, it thrives in full sun and well-drained, often dry and sandy, soils.

Mixture of scarlet acorns and undeveloped acorns.

From under scarlet oak by Pavilion.

The fruit is a 1/2- to 1-inch-long acorn that occurs singly or in pairs and is half covered by a deep bowl-like cap