North America Native Plant

Hybrid Oak

Botanical name: Quercus ×sargentii

USDA symbol: QUSA3

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Hybrid Oak: A Rare Native Tree Worth Knowing About Meet the hybrid oak (Quercus ×sargentii), one of nature’s more mysterious native trees. This perennial oak is a bit of an enigma in the plant world – it’s native to the United States, but you won’t find it growing in backyards ...

Hybrid Oak: A Rare Native Tree Worth Knowing About

Meet the hybrid oak (Quercus ×sargentii), one of nature’s more mysterious native trees. This perennial oak is a bit of an enigma in the plant world – it’s native to the United States, but you won’t find it growing in backyards across the country. In fact, you’ll be lucky to spot one at all!

What Makes This Oak Special?

The × in its botanical name gives away the secret – this is a hybrid oak, meaning it’s the result of two different oak species crossing paths (literally and genetically). As a native tree species, it belongs to our continent’s natural heritage, but its story is quite different from the familiar oaks you might know.

Like other oaks, this is a substantial tree that can grow over 13-16 feet tall with a single trunk. It’s a woody perennial that, once established, becomes a permanent and long-lived addition to the landscape.

Where Does Hybrid Oak Call Home?

Here’s where things get really interesting – and quite exclusive. This native oak has been documented only in Massachusetts. That’s it. One state. Talk about being a regional specialty!

Should You Plant Hybrid Oak?

Here’s the honest truth: finding this particular oak for your garden might be like searching for a needle in a haystack. With such limited distribution and documentation, it’s not readily available through typical nursery channels. The rarity of this species means that even if you live in Massachusetts, you’re unlikely to encounter it at your local garden center.

Growing Conditions and Care

While specific growing requirements for Quercus ×sargentii aren’t well-documented, we can make some educated guesses based on general oak characteristics:

  • Likely prefers well-draining soil
  • Probably enjoys full sun to partial shade
  • As a native Massachusetts plant, should be cold-hardy in that region
  • Would benefit from typical oak care practices once established

Better Oak Options for Your Garden

If you’re drawn to the idea of growing native oaks (and who isn’t?), consider these well-documented alternatives that are actually available and have known growing requirements:

  • White Oak (Quercus alba) – a majestic native with excellent wildlife value
  • Red Oak (Quercus rubra) – fast-growing with brilliant fall color
  • Pin Oak (Quercus palustris) – adaptable and widely available
  • Bur Oak (Quercus macrocarpa) – extremely hardy and drought-tolerant

The Wildlife Connection

While we don’t have specific data on wildlife benefits for this particular hybrid, oaks in general are wildlife superstars. They support hundreds of caterpillar species, provide acorns for mammals and birds, and offer nesting sites. Any oak you choose to plant will become a bustling wildlife hub in your yard.

The Bottom Line

Quercus ×sargentii is fascinating from a botanical perspective – a rare native hybrid with an extremely limited range. However, for practical gardening purposes, you’ll have much better luck (and more documented success) with other native oak species that are readily available and well-understood.

Sometimes the most interesting plants are also the most elusive. While hybrid oak remains a botanical curiosity worth knowing about, your garden – and local wildlife – will thrive just as well with its more common oak cousins.

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 ×sargentii Rehder [montana × robur] - 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