North America Native Plant

Low Sandmat

Botanical name: Chamaesyce spurca

USDA symbol: CHSP5

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Chamaesyce theriaca (L.C. Wheeler) Shinners var. spurca (M.C. Johnst.) Mayfield (CHTHS)  âš˜  Euphorbia theriaca L.C. Wheeler var. spurca M.C. Johnst. (EUTHS)   

Low Sandmat: A Tiny Texas Native That Packs a Punch If you’re looking for a plant that embodies the saying good things come in small packages, meet low sandmat (Chamaesyce spurca). This unassuming little annual might not win any beauty contests, but it’s a true Texas treasure that deserves a ...

Low Sandmat: A Tiny Texas Native That Packs a Punch

If you’re looking for a plant that embodies the saying good things come in small packages, meet low sandmat (Chamaesyce spurca). This unassuming little annual might not win any beauty contests, but it’s a true Texas treasure that deserves a spot in the right native garden.

What Exactly Is Low Sandmat?

Low sandmat is a native annual forb that calls the Lone Star State home. As a member of the spurge family, it’s a herbaceous plant without woody stems that completes its entire life cycle in just one growing season. Don’t let its diminutive size fool you – this little plant is perfectly adapted to Texas’s challenging climate and sandy soils.

You might also encounter this plant listed under its former scientific names, including Chamaesyce theriaca var. spurca or Euphorbia theriaca var. spurca, but Chamaesyce spurca is the current accepted name.

Where Does Low Sandmat Call Home?

Low sandmat is exclusively native to Texas, making it a true regional specialty. This endemic species has evolved specifically to thrive in the sandy soils and hot, dry conditions found throughout much of the state.

Should You Grow Low Sandmat in Your Garden?

The answer depends entirely on what you’re trying to achieve in your landscape. Low sandmat isn’t going to provide the showy blooms of a wildflower garden or the lush foliage of a traditional perennial border. Instead, it offers something much more subtle but equally valuable.

Why You Might Want to Plant It:

  • It’s a true Texas native that supports local ecosystems
  • Perfect for authentic native plant restorations
  • Thrives in challenging sandy soils where other plants struggle
  • Requires virtually no maintenance once established
  • Provides food for small insects and pollinators
  • Self-seeds readily in appropriate conditions

Why You Might Skip It:

  • Very small and inconspicuous – not a showstopper
  • Limited to specific soil and climate conditions
  • Only suitable for USDA zones 8-10
  • Annual nature means it needs to reseed each year

Growing Low Sandmat Successfully

If you’ve decided that low sandmat fits your gardening goals, you’ll be pleased to know it’s relatively easy to grow – as long as you can provide the right conditions.

Ideal Growing Conditions:

  • Sunlight: Full sun is essential
  • Soil: Well-drained sandy soils are preferred
  • Water: Drought tolerant once established; avoid overwatering
  • Climate: USDA hardiness zones 8-10

Planting and Care Tips:

  • Sow seeds directly in fall or early spring
  • Lightly rake seeds into sandy soil
  • Provide occasional water during germination
  • Once established, let nature take its course
  • Allow plants to self-seed for future generations
  • Avoid fertilizing – this plant prefers lean soils

The Perfect Garden Role

Low sandmat works best in specialized native plant gardens, particularly those focused on Texas flora. It’s an excellent choice for restoration projects, xeriscaped areas, and gardens designed to support local wildlife. While it won’t be the star of your garden show, it plays an important supporting role in creating authentic Texas ecosystems.

Consider pairing it with other Texas natives that share similar growing requirements, such as native grasses and drought-tolerant wildflowers that can provide the visual interest while low sandmat works quietly in the background.

Supporting Texas Wildlife

Though small, low sandmat provides nectar for various small insects and pollinators. Its seeds may also provide food for small wildlife. As a native annual, it’s part of the complex web of relationships that support Texas’s unique ecosystems.

The Bottom Line

Low sandmat isn’t for every garden or every gardener, but for those passionate about native Texas plants and authentic ecosystem restoration, it’s a valuable addition. If you have sandy soils and want to create a truly native Texas landscape, this little annual deserves consideration. Just remember – it’s all about setting the right expectations and appreciating plants for their ecological value as much as their ornamental appeal.

Low Sandmat

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

Chamaesyce Gray - sandmat

Species

Chamaesyce spurca (M.C. Johnst.) B.L. Turner - low sandmat

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