North America Native Plant

Trecul’s Toothleaf

Botanical name: Stillingia treculiana

USDA symbol: STTR2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Trecul’s Toothleaf: A Lesser-Known Texas Native Worth Discovering If you’re passionate about native Texas plants, you might have stumbled across the name Trecul’s toothleaf (Stillingia treculiana) in your botanical adventures. This intriguing perennial forb represents one of those hidden gems in the world of native gardening – a plant that’s ...

Trecul’s Toothleaf: A Lesser-Known Texas Native Worth Discovering

If you’re passionate about native Texas plants, you might have stumbled across the name Trecul’s toothleaf (Stillingia treculiana) in your botanical adventures. This intriguing perennial forb represents one of those hidden gems in the world of native gardening – a plant that’s authentically Texan but remains somewhat mysterious even to seasoned gardeners.

What Exactly Is Trecul’s Toothleaf?

Trecul’s toothleaf is a perennial forb, which simply means it’s a non-woody plant that comes back year after year. Unlike shrubs or trees, this plant lacks significant woody tissue and keeps its growing points at or below ground level, helping it survive through tough seasons. It belongs to the spurge family, sharing kinship with other Stillingia species that call North America home.

A True Texas Native

Here’s what makes Trecul’s toothleaf special – it’s a bonafide Texas endemic. While many native plants have ranges spanning multiple states or even countries, this particular species calls only the Lone Star State home. When you plant Trecul’s toothleaf, you’re not just adding a native plant to your garden; you’re cultivating a piece of Texas’s unique botanical heritage.

The Challenge: Limited Information Available

Here’s where things get interesting (and a bit challenging). Unlike some of its more famous plant cousins, Trecul’s toothleaf hasn’t been extensively studied or widely cultivated. This means that specific growing information, detailed descriptions of its appearance, and cultivation tips are surprisingly scarce. Even experienced botanists and native plant enthusiasts often know little about this particular species.

What We Do Know

Based on available information and what we understand about related species, here’s what we can piece together:

  • It’s a perennial that should return each growing season
  • As a Texas native, it’s likely adapted to the state’s challenging climate conditions
  • Being a forb, it probably has a relatively low-growing, herbaceous form
  • Like other Stillingia species, it may have small, inconspicuous flowers

Should You Grow It?

The decision to grow Trecul’s toothleaf comes with both excitement and uncertainty. On the plus side, you’d be supporting a truly local species and contributing to biodiversity in your landscape. Texas natives are generally well-adapted to local conditions, potentially requiring less water and maintenance once established.

However, the lack of readily available information means you’d be somewhat of a pioneer gardener. You might not know exactly what to expect in terms of size, appearance, growing requirements, or seasonal behavior.

The Reality of Finding and Growing It

Perhaps the biggest challenge you’ll face is actually finding Trecul’s toothleaf. Since it’s not commonly cultivated, you’re unlikely to find it at your typical native plant sale or nursery. You might need to connect with specialized native plant societies, botanists, or conservation organizations in Texas.

If you do manage to locate seeds or plants, approach growing it with curiosity and patience. Start with conditions that generally suit Texas natives: well-draining soil, appropriate sun exposure for your region, and minimal supplemental watering once established.

Contributing to Knowledge

If you do decide to grow Trecul’s toothleaf, consider documenting your experience. Take photos, note growing conditions, observe flowering times, and record what works (and what doesn’t). Your observations could contribute valuable information to help future gardeners and even researchers better understand this understudied species.

Alternative Texas Natives

If the uncertainty around Trecul’s toothleaf feels daunting, consider exploring other Texas native forbs with similar ecological roles but more available growing information. This way, you can still support native biodiversity while having a better idea of what to expect in your garden.

Trecul’s toothleaf represents both the excitement and challenges of native gardening. While we may not have all the answers about this Texas endemic, its very existence reminds us that there’s still so much to discover in our own backyards. Whether you choose to take on the adventure of growing this mysterious native or opt for better-known alternatives, you’re contributing to a more biodiverse and locally adapted landscape.

Trecul’s Toothleaf

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Stillingia Garden ex L. - toothleaf

Species

Stillingia treculiana (Müll. Arg.) I.M. Johnst. - Trecul's toothleaf

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