North America Native Plant

Hybrid Oak

Botanical name: Quercus ×brittonii

USDA symbol: QUBR

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Hybrid Oak (Quercus ×brittonii): A Rare Native Tree Worth Knowing If you’re a native plant enthusiast who loves discovering uncommon species, the hybrid oak (Quercus ×brittonii) might just pique your interest. This naturally occurring oak hybrid represents one of nature’s fascinating experiments in tree genetics, though it remains relatively mysterious ...

Hybrid Oak (Quercus ×brittonii): A Rare Native Tree Worth Knowing

If you’re a native plant enthusiast who loves discovering uncommon species, the hybrid oak (Quercus ×brittonii) might just pique your interest. This naturally occurring oak hybrid represents one of nature’s fascinating experiments in tree genetics, though it remains relatively mysterious in the gardening world.

What Makes This Oak Special?

Quercus ×brittonii is a perennial tree native to the eastern United States, naturally found in Maryland, New Jersey, New York, and Pennsylvania. Like other oaks, it’s a woody giant that can grow well over 13-16 feet tall with a single trunk, potentially reaching impressive mature heights that make it a true canopy species.

As a hybrid oak, this tree represents the natural cross-pollination between two parent oak species, creating something unique in the oak family tree. While we don’t have extensive records of its specific appearance or growth characteristics, it likely shares many of the classic oak features we know and love.

Should You Plant Hybrid Oak in Your Garden?

Here’s where things get a bit tricky. This hybrid oak falls into the category of plants that are fascinating from a botanical perspective but challenging from a practical gardening standpoint. Since detailed cultivation information and nursery availability are extremely limited, this isn’t your typical plant it this weekend kind of tree.

The Reality Check

If you’re drawn to this particular hybrid oak, you’ll likely face these challenges:

  • Very limited availability from nurseries or seed sources
  • Lack of detailed growing requirements and care instructions
  • Unknown performance in typical garden settings
  • Uncertainty about mature size, growth rate, and aesthetic qualities

Better Oak Alternatives for Your Native Garden

Instead of hunting for this elusive hybrid, consider these well-documented native oaks that thrive in the same general region:

  • White Oak (Quercus alba) – A majestic native with excellent fall color and wildlife value
  • Red Oak (Quercus rubra) – Fast-growing with brilliant autumn foliage
  • Chestnut Oak (Quercus montana) – Adaptable to various soil conditions
  • Pin Oak (Quercus palustris) – Great for wetter soils and urban environments

If You’re Still Curious…

Should you happen to encounter Quercus ×brittonii in the wild or from a specialized native plant source, treat it like you would other oak species. Most oaks prefer:

  • Full sun exposure
  • Well-draining soil
  • Plenty of space for their eventual mature size
  • Patience during establishment (oaks are notoriously slow starters)

The Bottom Line

While Quercus ×brittonii is undoubtedly a legitimate native species worthy of conservation and study, it’s not practical for most home gardeners. Your native landscaping goals are better served by choosing from the many well-documented, readily available oak species that will provide proven beauty, wildlife habitat, and ecosystem benefits. Save the hybrid hunt for the botanical specialists, and enjoy the fantastic native oaks that are waiting for you at your local native plant nursery!

Hybrid Oak

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Hamamelididae

Order

Fagales

Family

Fagaceae Dumort. - Beech family

Genus

Quercus L. - oak

Species

Quercus ×brittonii W.T. Davis (pro sp.) [ilicifolia × marilandica] - hybrid oak

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA