North America Native Plant

Hybrid Oak

Botanical name: Quercus ×egglestonii

USDA symbol: QUEG

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Synonyms: Quercus ×shirlingii Bush ex Palmer & Steyerm. (QUSH2)   

Hybrid Oak: A Unique Native Tree for Your Landscape Meet the hybrid oak (Quercus ×egglestonii), a fascinating native tree that’s essentially nature’s own botanical experiment! This naturally occurring hybrid represents the interesting world of oak crossbreeding, where two different oak species have combined their best traits to create something entirely ...

Hybrid Oak: A Unique Native Tree for Your Landscape

Meet the hybrid oak (Quercus ×egglestonii), a fascinating native tree that’s essentially nature’s own botanical experiment! This naturally occurring hybrid represents the interesting world of oak crossbreeding, where two different oak species have combined their best traits to create something entirely unique.

What Makes This Oak Special?

The hybrid oak goes by the botanical name Quercus ×egglestonii, and you might occasionally see it referred to by its synonym Quercus ×shirlingii. As a perennial tree, this oak is built to last for generations, developing into a substantial woody plant with a single trunk that typically grows well over 13-16 feet in height, though environmental conditions can sometimes influence its final form.

Where Does It Call Home?

This native beauty has made itself at home across several states in the central United States. You’ll find hybrid oak naturally growing in:

  • Kentucky
  • Missouri
  • Ohio
  • Tennessee

Being native to these regions means it’s naturally adapted to the local climate and soil conditions, making it a potentially excellent choice for gardeners in these areas who want to support local ecosystems.

Why Consider Planting Hybrid Oak?

Choosing a hybrid oak for your landscape comes with several compelling reasons:

  • Native heritage: As a native species, it supports local wildlife and fits naturally into regional ecosystems
  • Unique genetics: Hybrid vigor often means increased resilience and adaptability
  • Long-term investment: Oaks are legendary for their longevity and become more beautiful with age
  • Low maintenance: Once established, native trees typically require less water and care than non-native alternatives

Growing Your Hybrid Oak

While specific growing information for Quercus ×egglestonii is limited due to its hybrid nature and relatively uncommon cultivation, we can apply general oak-growing wisdom to give this tree the best start possible.

Planting and Care Tips

Here’s how to set your hybrid oak up for success:

  • Location, location, location: Choose a spot with plenty of room for growth, as mature oaks need space to spread
  • Soil preparation: Most oaks prefer well-draining soil but are adaptable to various soil types
  • Watering wisdom: Deep, infrequent watering encourages strong root development
  • Patience pays off: Oaks are famously slow starters but reward patience with decades of beauty
  • Minimal pruning: Young trees benefit from light shaping, but mature oaks prefer to be left alone

A Word of Caution

Because hybrid oak is a naturally occurring hybrid with limited cultivation history, finding nursery stock might prove challenging. If you’re set on this particular species, you may need to source it from specialty native plant nurseries or consider similar native oak alternatives that are more readily available.

The Bottom Line

Hybrid oak represents an intriguing choice for gardeners who appreciate unique native trees and have the patience for long-term tree gardening. While specific information about this hybrid remains limited, its native status and oak heritage suggest it could be a valuable addition to naturalistic landscapes in its native range. Just remember that with any oak, you’re planting for future generations as much as for immediate gratification – and that’s part of their enduring appeal!

If you can’t locate Quercus ×egglestonii specifically, consider exploring other native oak species in your region that might offer similar benefits with greater availability and documented growing requirements.

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 ×egglestonii Trel. [imbricaria × shumardii] - 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