North America Non-native Plant

Curlyleaf

Botanical name: Eragrostis rigidior

USDA symbol: ERRI3

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Curlyleaf Grass (Eragrostis rigidior): A Mystery Native Worth Investigating If you’ve stumbled across the name curlyleaf or Eragrostis rigidior in your native plant research, you might be scratching your head wondering what exactly this grass is all about. Don’t worry – you’re not alone! This particular member of the lovegrass ...

Curlyleaf Grass (Eragrostis rigidior): A Mystery Native Worth Investigating

If you’ve stumbled across the name curlyleaf or Eragrostis rigidior in your native plant research, you might be scratching your head wondering what exactly this grass is all about. Don’t worry – you’re not alone! This particular member of the lovegrass family is something of an enigma in the native plant world.

What We Know About Curlyleaf

Curlyleaf (Eragrostis rigidior) belongs to the Poaceae family, making it a true grass rather than a grass-like sedge or rush. As its common name suggests, this species likely features leaves with some degree of curling or twisting – a characteristic that would make it visually distinctive among other native grasses.

Like other members of the Eragrostis genus (commonly called lovegrasses), curlyleaf would typically be a bunch-forming grass that grows in clumps rather than spreading via runners.

The Geographic Mystery

Here’s where things get interesting – and a bit frustrating for curious gardeners. The native range and distribution of Eragrostis rigidior isn’t well-documented in readily available horticultural or botanical resources. This could mean several things: it might be a regional endemic with a very limited range, it could be rare, or the taxonomic name might not be widely recognized in current botanical literature.

Should You Plant Curlyleaf in Your Garden?

Given the limited information available about this specific grass, it’s difficult to provide concrete growing recommendations. However, here are some considerations:

  • The lack of readily available information suggests this isn’t a commonly cultivated native grass
  • It may be regionally specific or rare, making it difficult to source
  • Without clear growing requirements, success in your garden would be uncertain

Better-Documented Lovegrass Alternatives

If you’re interested in native lovegrasses for your landscape, consider these well-documented alternatives:

  • Purple Lovegrass (Eragrostis spectabilis) – Beautiful purple-tinged seed heads
  • Sand Lovegrass (Eragrostis trichodes) – Excellent for sandy soils
  • Plains Lovegrass (Eragrostis intermedia) – Great for prairie restorations

The Bottom Line

While curlyleaf (Eragrostis rigidior) remains something of a botanical mystery, this highlights an important point about native plant gardening: not every native species is readily available or well-suited for home landscapes. Sometimes the most responsible approach is to choose well-documented native alternatives that will thrive in your specific conditions.

If you’re determined to learn more about this particular species, consider reaching out to local botanical societies, native plant groups, or university extension programs in your area. They may have region-specific knowledge about Eragrostis rigidior that isn’t widely available online.

Remember, successful native gardening is about choosing plants that are not only native to your region but also well-adapted to your specific site conditions and available from reputable sources.

Curlyleaf

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Eragrostis von Wolf - lovegrass

Species

Eragrostis rigidior Pilg. - curlyleaf

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