North America Native Plant

Hybrid Oak

Botanical name: Quercus ×atlantica

USDA symbol: QUAT

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Synonyms: Quercus ×sublaurifolia Trel. ex Palmer (QUSU9)   

Hybrid Oak: A Native Tree Worth Considering for Your Landscape Meet the hybrid oak (Quercus ×atlantica), a fascinating native tree that represents nature’s own experiment in oak breeding. While this particular oak hybrid might not be as well-known as its more famous cousins, it offers gardeners in the southeastern United ...

Hybrid Oak: A Native Tree Worth Considering for Your Landscape

Meet the hybrid oak (Quercus ×atlantica), a fascinating native tree that represents nature’s own experiment in oak breeding. While this particular oak hybrid might not be as well-known as its more famous cousins, it offers gardeners in the southeastern United States an opportunity to grow a truly unique native species.

What Makes This Oak Special?

The hybrid oak is exactly what its name suggests – a natural cross between two oak species that has developed its own distinct characteristics. Sometimes referred to by its scientific synonym Quercus ×sublaurifolia, this tree embodies the best of both worlds from its parent species. As a perennial woody plant, it develops the classic oak form with a single trunk that can reach heights greater than 13-16 feet, making it a substantial addition to any landscape.

Where Does It Call Home?

This native beauty has made itself at home across the southeastern United States, naturally occurring in Alabama, Florida, Georgia, Mississippi, North Carolina, and South Carolina. Its presence in these states suggests it’s well-adapted to the climate and growing conditions of the southeastern region.

Why Consider Planting a Hybrid Oak?

Choosing native plants like the hybrid oak comes with several advantages:

  • It’s naturally adapted to southeastern growing conditions
  • Supports local ecosystems and wildlife (though specific benefits aren’t well-documented for this particular hybrid)
  • Generally requires less maintenance than non-native alternatives once established
  • Provides the classic oak aesthetic that many gardeners love

The Reality Check

Here’s where we need to be honest: specific information about Quercus ×atlantica is surprisingly limited. Unlike more common oak species, detailed growing guides, specific wildlife benefits, and cultivation tips for this particular hybrid are hard to come by. This doesn’t mean it’s not worth planting – it just means you’ll be somewhat pioneering if you choose to grow it.

General Growing Guidance

While specific care instructions for hybrid oak aren’t readily available, we can draw from general oak growing principles:

  • Most oaks prefer well-draining soil
  • They typically need full sun to partial shade
  • Once established, oaks are generally drought-tolerant
  • Plant in spring or fall for best establishment
  • Give them plenty of space – oaks can become quite large over time

What We Don’t Know (But Wish We Did)

Unfortunately, many details about this hybrid oak remain a mystery, including:

  • Specific USDA hardiness zones
  • Exact mature size expectations
  • Particular wildlife benefits
  • Specific soil and water preferences
  • Propagation methods

Should You Plant It?

If you’re located in the southeastern states where hybrid oak naturally occurs and you’re drawn to the idea of growing a lesser-known native species, this could be an interesting addition to your landscape. However, given the limited available information, you might want to consider it as part of a diverse native planting rather than as your primary shade tree.

For gardeners seeking well-documented native oaks with known benefits, consider researching other native oak species in your area like Southern Live Oak, White Oak, or Red Oak – species with extensive cultivation information and proven track records in home landscapes.

The Bottom Line

The hybrid oak represents one of nature’s own experiments in plant breeding, and there’s something appealing about growing a native species that’s still keeping some of its secrets. While we can’t provide the detailed growing guide you might find for more common trees, sometimes the most rewarding plants are the ones that keep us guessing – and learning – along the way.

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 ×atlantica Ashe (pro sp.) [incana × laurifolia] - 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