North America Native Plant

Hybrid Oak

Botanical name: Quercus ×byarsii

USDA symbol: QUBY

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Hybrid Oak: A Rare Native Treasure for Southern Gardens Meet the hybrid oak (Quercus ×byarsii), one of nature’s more mysterious native trees. This perennial woody giant represents a fascinating piece of our native plant heritage, though it remains one of the lesser-known members of the mighty oak family. If you’re ...

Hybrid Oak: A Rare Native Treasure for Southern Gardens

Meet the hybrid oak (Quercus ×byarsii), one of nature’s more mysterious native trees. This perennial woody giant represents a fascinating piece of our native plant heritage, though it remains one of the lesser-known members of the mighty oak family. If you’re a gardener who loves discovering unique native species, this tree might just capture your imagination.

Where Does Hybrid Oak Call Home?

The hybrid oak is a true native to the southeastern United States, specifically found growing naturally in Georgia and Tennessee. This limited geographic distribution makes it a special addition to gardens within its native range, where it can thrive in familiar climate conditions.

What Makes This Oak Special?

As a hybrid oak, Quercus ×byarsii represents the natural crossing of two oak species, creating something unique in the plant world. Like other oaks, this is a substantial tree that typically grows as a single-trunked specimen reaching heights greater than 13-16 feet, often much taller. Its perennial nature means it’s a long-term investment in your landscape that will provide beauty and benefits for generations.

Why Consider Planting Hybrid Oak?

Here are compelling reasons to consider this native tree for your landscape:

  • Native heritage: As a native species, it’s naturally adapted to local growing conditions
  • Low maintenance: Native plants typically require less water and care once established
  • Ecological value: Oak trees generally support numerous wildlife species and beneficial insects
  • Longevity: Oaks are known for their impressive lifespan and lasting beauty
  • Unique character: As a hybrid, it offers distinctive characteristics not found in other oak species

The Challenge: Limited Information

Here’s where things get interesting (and a bit challenging). Quercus ×byarsii is not well-documented in readily available gardening resources. This means specific details about its preferred growing conditions, mature size, care requirements, and aesthetic characteristics are limited. For gardeners, this presents both an opportunity and a consideration.

Growing Hybrid Oak: What We Know

While specific growing information for this hybrid is scarce, we can make educated assumptions based on general oak characteristics and its native range:

  • Climate adaptation: Likely suited to the climate conditions of Georgia and Tennessee
  • Soil preferences: Most oaks prefer well-draining soils but can adapt to various conditions
  • Sun requirements: Typically full sun to partial sun
  • Establishment period: Like most oaks, may be slow to establish but worth the patience

Should You Plant It?

The decision to plant hybrid oak depends on your gardening goals and comfort level with less-documented species. Consider this tree if you:

  • Live within its native range (Georgia or Tennessee)
  • Enjoy growing unique, lesser-known native species
  • Have space for a large tree
  • Appreciate the ecological benefits that oak trees provide
  • Don’t mind some uncertainty about specific characteristics

Finding and Planting Hybrid Oak

Given its limited documentation, finding Quercus ×byarsii may require some detective work. Contact local native plant societies, botanical gardens, or specialty native plant nurseries in Georgia and Tennessee. If you do locate this tree, ensure you’re purchasing from a reputable source that can verify the plant’s identity.

When planting, follow general oak planting guidelines: choose a location with adequate space for growth, ensure good drainage, and be patient during the establishment period. Regular watering during the first few years will help your tree develop a strong root system.

The Bottom Line

Hybrid oak represents one of those intriguing native plants that reminds us there’s still much to discover in the plant world. While the limited available information makes it a somewhat adventurous choice, its native status and oak heritage suggest it could be a valuable addition to appropriate landscapes. For gardeners within its native range who enjoy unique species and supporting local ecosystems, this mysterious hybrid might be worth seeking out.

Just remember: when dealing with lesser-known species, it’s always wise to connect with local experts and native plant communities who might have hands-on experience with this particular tree.

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 ×byarsii Sudw. [macrocarpa × michauxii] - 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