Content Detail

CRIMSON SPIRE™ oak is a hybrid between English oak and White oak. It was selected for a narrow form, only 15 feet wide, and good red fall color. It is tolerant of a wide range of conditions.

  • Family (English) Beech
  • Family (botanic) Fagaceae
  • Planting site City parkway, Residential and parks, Restricted sites, Wide median
  • Tree or plant type Tree
  • Foliage Deciduous (seasonally loses leaves)
  • Native locale Non-native
  • Size range Large tree (more than 40 feet)
  • Mature height >40 feet
  • Mature width 10-20 feet
  • Light exposure Full sun (6 hrs direct light daily)
  • Hardiness zones Zone 4, Zone 5 (Northern Illinois), Zone 6 (City of Chicago), Zone 7
  • Soil preference Moist, well-drained soil
  • Tolerances Alkaline soil, Dry sites, Occasional drought
  • Season of interest mid fall, late fall
  • Flower color and fragrance Inconspicuous
  • Shape or form Columnar
  • Growth rate Fast
  • Transplants well Yes
  • Planting considerations Messy fruit/plant parts
  • Wildlife Migrant birds, Small mammals
  • Has cultivars Yes

Size and form:

The columnar mature height is more than 40 feet and mature width is 10 to 20 feet.

Native geographic location and habitat:

This is of hybrid origin.

Bark color and texture:

Bark is dark brown and furrowed.

Leaf or needle arrangement, size, shape, and texture:

The dark green alternate, lobed leaves change to red in fall.

Flower arrangement, shape, and size:

Flowers are not ornamentally important. Drooping, male catkins appear in April. Female flowers are inconspicuous tiny spikes in the axils of new leaves.

Fruit, cone, nut, and seed descriptions:

The 1 inch long, elongated nut is enclosed with a warty cap which is about a quarter of the nut. Acorns ripen in fall and can be considered a litter problem, especially near sidewalks and patios.

Plant care:

CRIMSON SPIRE™ oak is more tolerant of wet sites than its white oak parent, but well-drained sites are best. It is intolerant of salt. Prune oaks in the dormant season to avoid attracting beetles that may carry oak wilt.  

List of pests, diseases and tolerances:

Oak wilt, anthracnose, two-lined chestnut borer are possible problems. It is resistant to powdery mildew.


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