North America Non-native Plant

Toothed Spurge

Botanical name: Euphorbia dentata

USDA symbol: EUDE4

Life cycle: annual

Habit: forb

Native status: It's either native or not native in the lower 48 states  

Toothed Spurge: A Humble Native with Quiet Garden Charm If you’re looking for a plant that won’t steal the spotlight but will quietly do its job in your garden, meet toothed spurge (Euphorbia dentata). This unassuming annual forb might not win any beauty contests, but it has its own modest ...

Toothed Spurge: A Humble Native with Quiet Garden Charm

If you’re looking for a plant that won’t steal the spotlight but will quietly do its job in your garden, meet toothed spurge (Euphorbia dentata). This unassuming annual forb might not win any beauty contests, but it has its own modest charm and serves as a reliable filler in naturalized plantings and wildflower gardens.

What Exactly Is Toothed Spurge?

Toothed spurge is an annual forb—basically a non-woody plant that completes its entire life cycle in one growing season. Like other members of the spurge family, it produces a milky sap and has small, somewhat inconspicuous flowers. The toothed part of its name comes from the serrated edges of its leaves, which give them a slightly jagged appearance.

This plant typically grows as a low, spreading groundcover, making it useful for filling in gaps in informal garden settings. While it won’t provide the showstopping blooms of more ornamental species, it offers a subtle texture and can develop attractive reddish stems as the season progresses.

Where You’ll Find Toothed Spurge Growing Wild

Toothed spurge has a wide distribution across much of the United States, naturally occurring in Alabama, Arizona, Arkansas, California, Colorado, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, and West Virginia.

This extensive range suggests that toothed spurge is quite adaptable to different climate conditions and soil types across the country.

Why Consider Growing Toothed Spurge?

While toothed spurge might not be the first plant that comes to mind when planning a garden, it has several qualities that make it worth considering:

  • Low maintenance: Once established, it requires minimal care
  • Drought tolerance: Can handle dry conditions once mature
  • Pollinator support: Attracts small flies and other minor pollinators
  • Natural filler: Excellent for naturalizing areas and filling gaps
  • Self-seeding: Will return each year if conditions are right

Best Garden Settings for Toothed Spurge

Toothed spurge works best in informal garden settings where a more natural, relaxed look is desired. Consider it for:

  • Wildflower gardens and meadow plantings
  • Prairie restoration projects
  • Naturalized areas where you want low-maintenance groundcover
  • Mixed plantings where it can serve as a textural backdrop

It’s probably not the best choice for formal gardens or areas where you want tight control over plant placement, as it tends to self-seed and can pop up in unexpected places.

Growing Conditions and Care

One of toothed spurge’s best qualities is its adaptability. Here’s what it prefers:

  • Sunlight: Full sun to partial shade
  • Soil: Well-drained soils; not particularly picky about soil type
  • Water: Moderate water when establishing, then quite drought tolerant
  • Hardiness: Thrives in USDA zones 4-9

Planting and Maintenance Tips

Growing toothed spurge is refreshingly straightforward:

  • Seeding: Direct sow seeds in spring after the last frost
  • Spacing: Seeds will naturally space themselves as they self-sow
  • Watering: Water regularly until established, then reduce frequency
  • Fertilizing: Generally unnecessary—this plant thrives in average soils
  • Pruning: No pruning needed; let it complete its natural cycle

A Word of Caution

Like all euphorbias, toothed spurge produces a milky sap that can be irritating to skin and eyes. Wear gloves when handling, and keep pets and children from eating the plant. The sap can cause skin irritation in sensitive individuals.

The Bottom Line on Toothed Spurge

Toothed spurge won’t transform your garden into a showpiece, but it’s a reliable, low-maintenance plant that can serve as a useful supporting player in naturalized settings. If you’re creating a wildflower garden, working on prairie restoration, or simply want something that will fill in spaces without much fuss, toothed spurge might be just the quiet, dependable plant you need.

While it may not have the flashy appeal of more ornamental species, sometimes the most valuable plants are the ones that simply do their job well without demanding attention—and toothed spurge fits that description perfectly.

Toothed Spurge

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

Euphorbia L. - spurge

Species

Euphorbia dentata Michx. - toothed spurge

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