North America Native Plant

Boynton Sand Post Oak

Botanical name: Quercus boyntonii

USDA symbol: QUBO2

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Quercus stellata Wangenh. var. boyntonii (Beadle) Sarg. (QUSTB)   

Boynton Sand Post Oak: A Rare Native Gem Worth Protecting Meet the Boynton sand post oak (Quercus boyntonii), one of America’s rarest native oaks that most gardeners have never heard of. This diminutive shrubby oak might not win any popularity contests, but for conservation-minded gardeners, it represents something truly special: ...

Rare plant alert!

Region: Alabama

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Region: Alabama

Boynton Sand Post Oak: A Rare Native Gem Worth Protecting

Meet the Boynton sand post oak (Quercus boyntonii), one of America’s rarest native oaks that most gardeners have never heard of. This diminutive shrubby oak might not win any popularity contests, but for conservation-minded gardeners, it represents something truly special: a chance to help preserve a critically endangered piece of our natural heritage right in your backyard.

What Makes This Oak So Special?

Unlike its towering oak cousins, the Boynton sand post oak is a charming shrub that typically stays under 13-16 feet tall. This perennial woody plant produces multiple stems from the ground, creating a bushy, compact form that’s quite different from the classic oak tree silhouette you might expect. Don’t let its modest size fool you – this little oak packs a big conservation punch.

A Plant on the Brink

Here’s the important part: Quercus boyntonii has a Global Conservation Status of S1, meaning it’s critically imperiled. With typically 5 or fewer occurrences and very few remaining individuals (less than 1,000), this oak is hanging on by a thread. In Alabama, where it’s native, it also holds the S1 rarity status.

What this means for you as a gardener: If you’re interested in growing this rare beauty, please only source plants or seeds from reputable native plant nurseries that practice responsible propagation. Never collect from wild populations.

Where Does It Call Home?

The Boynton sand post oak has an extremely limited native range, found naturally in just two states: Alabama and eastern Texas. This narrow distribution is part of what makes it so vulnerable to extinction.

Why Grow This Rare Oak?

You might be wondering why anyone would want to grow such an uncommon plant. Here are some compelling reasons:

  • Conservation impact: Growing this species helps preserve genetic diversity and creates backup populations
  • Unique garden specimen: Its shrubby form and rarity make it a conversation starter
  • Native plant gardening: Perfect for specialized native plant collections in the Southeast
  • Low maintenance: Once established, it requires minimal care

Growing Conditions and Care

The Boynton sand post oak isn’t called a sand oak for nothing – it absolutely loves well-draining sandy soils. Here’s what you need to know to grow it successfully:

Ideal Growing Conditions:

  • Well-draining sandy soil (this is non-negotiable!)
  • Full sun to partial shade
  • USDA Hardiness Zones 8-9
  • Minimal water once established

Planting and Care Tips

Success with this rare oak comes down to mimicking its natural habitat:

  • Soil preparation: If you don’t have naturally sandy soil, amend with coarse sand to improve drainage
  • Watering: Water regularly during establishment, then reduce to minimal supplemental watering
  • Fertilizing: Generally unnecessary – these oaks prefer lean soils
  • Pruning: Minimal pruning needed; remove dead or damaged branches as needed

Garden Design and Landscape Role

The Boynton sand post oak works best in:

  • Native plant gardens focused on regional species
  • Conservation gardens
  • Xerophytic or drought-tolerant landscapes
  • Educational gardens highlighting rare plants

Its compact size makes it suitable for smaller spaces where you want the character of an oak without the massive canopy.

Wildlife and Ecosystem Benefits

Like other oaks, this species supports local ecosystems by providing habitat and food sources for various insects and small wildlife. While it may be small, every native plant contributes to the local food web.

The Bottom Line

The Boynton sand post oak isn’t for every garden or every gardener. Its extremely limited availability and specific growing requirements make it a specialized choice. However, for conservation-minded gardeners in the appropriate climate zones who can provide well-draining sandy conditions, this rare oak offers a unique opportunity to participate in plant conservation while adding something truly special to their landscape.

Remember: if you decide to grow this rare species, always source your plants responsibly from reputable native plant nurseries. Together, we can help ensure that future generations will still be able to enjoy this remarkable little oak.

Boynton Sand Post 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 boyntonii Beadle - Boynton sand post oak

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