North America Native Plant

Ozark Chinquapin

Botanical name: Castanea pumila var. ozarkensis

USDA symbol: CAPUO

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Castanea alabamensis Ashe (CAAL9)  âš˜  Castanea ozarkensis Ashe (CAOZ)  âš˜  Castanea ozarkensis Ashe var. arkansana (Ashe) Ashe (CAOZA)   

Ozark Chinquapin: A Hidden Gem for Native Plant Enthusiasts Meet the Ozark chinquapin (Castanea pumila var. ozarkensis), a delightful native shrub that’s been quietly thriving in the American South for centuries. Also known as the Ozark chinkapin, this charming member of the chestnut family offers gardeners a unique opportunity to ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Ozark Chinquapin: A Hidden Gem for Native Plant Enthusiasts

Meet the Ozark chinquapin (Castanea pumila var. ozarkensis), a delightful native shrub that’s been quietly thriving in the American South for centuries. Also known as the Ozark chinkapin, this charming member of the chestnut family offers gardeners a unique opportunity to grow something truly special – a plant that produces its own edible nuts while supporting local wildlife.

What Makes the Ozark Chinquapin Special?

This perennial shrub is a true American native, naturally occurring across Alabama, Arkansas, Louisiana, Mississippi, Missouri, and Oklahoma. Unlike its towering chestnut cousins, the Ozark chinquapin keeps things manageable, typically growing as a multi-stemmed shrub that stays under 13-16 feet tall – perfect for most home landscapes.

The plant’s aesthetic appeal lies in its seasonal changes: spring brings clusters of creamy-white, fragrant flowers that buzz with pollinator activity, summer offers lush green foliage, and fall delivers the exciting harvest of spiny burs containing sweet, edible nuts that wildlife (and humans!) absolutely love.

Why Consider Growing Ozark Chinquapin?

If you’re looking for a low-maintenance native plant that gives back to both you and local wildlife, this shrub checks all the boxes:

  • Supports native pollinators with nectar-rich flowers
  • Provides food for wildlife through its nutritious nuts
  • Offers seasonal interest with flowers, foliage, and fruit
  • Requires minimal care once established
  • Naturally drought tolerant
  • Helps preserve regional biodiversity

Perfect Garden Settings

The Ozark chinquapin shines in naturalized landscapes, wildlife gardens, and native plant collections. It works beautifully as an understory shrub in woodland settings or as a specimen plant in larger yards. Since it can spread through suckers to form small colonies, give it room to breathe – or embrace its tendency to create natural thickets.

Growing Conditions and Care

One of the best things about this native is its easygoing nature. The Ozark chinquapin adapts well to various conditions but performs best with:

  • Sunlight: Partial shade to full sun
  • Soil: Well-drained soils (avoid waterlogged areas)
  • Hardiness: USDA Zones 6-9
  • Water: Moderate water needs; drought tolerant once established

Planting and Care Tips

Getting started with Ozark chinquapin is refreshingly straightforward:

  • Plant in spring or fall for best establishment
  • Space plants 6-10 feet apart to allow for natural spreading
  • Water regularly the first year, then reduce as the plant establishes
  • Prune lightly in late winter if needed to maintain shape
  • Be patient – nuts may take several years to appear on young plants

A Word About Conservation

The Ozark chinquapin has a conservation status that suggests some regional concern, so it’s important to source plants from reputable native plant nurseries that practice responsible propagation. By growing this species, you’re not only enhancing your landscape but also helping preserve an important piece of American botanical heritage.

The Bottom Line

If you’re drawn to plants with character, history, and ecological value, the Ozark chinquapin deserves a spot in your garden. It’s not the showiest plant you’ll ever grow, but it’s certainly one of the most rewarding – offering beauty, wildlife habitat, and even a tasty treat come harvest time. Plus, there’s something deeply satisfying about growing a plant that’s been quietly perfecting its craft in American forests for generations.

Ready to add this native treasure to your landscape? Seek out responsibly sourced plants from native plant specialists, and prepare to enjoy years of low-maintenance beauty with a side of homegrown nuts!

Ozark Chinquapin

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

Castanea Mill. - chestnut

Species

Castanea pumila (L.) Mill. - chinquapin

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