Crimson Spire oak (Quercus robur 'Crimson Spire') is a deciduous tree that is a cultivar of the English oak. It is a tall, narrow tree that can grow up to 45 to 50 feet (13.7 to 15.2 meters) tall and only 12 to 15 feet (3.7 to 4.6 meters) wide.
The tree has a tight, upright habit with a columnar shape and produces small, yellowish-green flowers in the spring that are followed by acorns in the fall. Its foliage is a dark, green color with lobed leaves that turn a deep, crimson red color in the fall. The bark of the Crimson Spire oak is gray-brown and develops ridges and furrows with age.
Crimson Spire oak is a popular tree for urban landscapes and smaller gardens due to its narrow, upright growth habit and beautiful fall color. It is also known for its hardiness and adaptability to a range of soil types and environmental conditions.