North America Native Plant

Sandysoil Indiangrass

Botanical name: Sorghastrum setosum

USDA symbol: SOSE6

Life cycle: perennial

Habit: grass

Native status: Native to Puerto Rico  

Synonyms: Andropogon setosus Griseb. (ANSE15)  âš˜  Sorghastrum parviflorum auct. non (Desv.) Hitchc. & Chase (SOPA11)   

Sandysoil Indiangrass: A Caribbean Native Worth Considering Meet sandysoil Indiangrass (Sorghastrum setosum), a lesser-known native grass that calls the beautiful island of Puerto Rico home. While it may not be as famous as its mainland cousin, this perennial grass has its own unique charm and potential for the right garden ...

Sandysoil Indiangrass: A Caribbean Native Worth Considering

Meet sandysoil Indiangrass (Sorghastrum setosum), a lesser-known native grass that calls the beautiful island of Puerto Rico home. While it may not be as famous as its mainland cousin, this perennial grass has its own unique charm and potential for the right garden setting.

What Makes Sandysoil Indiangrass Special?

As a true Puerto Rican native, sandysoil Indiangrass represents an authentic piece of Caribbean flora. This perennial grass belongs to the graminoid family, which includes not just grasses but also sedges, rushes, and other grass-like plants. Its scientific name, Sorghastrum setosum, places it in the same genus as the well-known Indiangrass found throughout North America, though this species has adapted specifically to Caribbean conditions.

Where Does It Grow?

Sandysoil Indiangrass is endemic to Puerto Rico, meaning it naturally occurs nowhere else in the world. This makes it a truly special plant for gardeners in Puerto Rico who want to cultivate authentic native species.

Why Consider Growing Sandysoil Indiangrass?

If you’re gardening in Puerto Rico, here are some reasons why sandysoil Indiangrass might deserve a spot in your landscape:

  • True native heritage: Supporting authentic local flora helps preserve Puerto Rico’s natural botanical legacy
  • Perennial reliability: As a perennial, it returns year after year once established
  • Low maintenance potential: Native plants are typically well-adapted to local conditions, requiring less intensive care
  • Wildlife value: Native grasses often provide food and habitat for local wildlife, including birds and beneficial insects

Growing Conditions and Care

While specific growing information for sandysoil Indiangrass is limited, we can make educated assumptions based on its native habitat and grass family characteristics:

  • Climate: Likely thrives in tropical conditions (USDA zones 10-11)
  • Soil: The common name suggests it may prefer sandy or well-draining soils
  • Sunlight: Most native grasses prefer full sun to partial sun conditions
  • Water: Once established, likely drought-tolerant like many native grasses

The Challenge: Limited Availability

Here’s the honest truth: finding sandysoil Indiangrass for your garden might be quite challenging. As a species with limited distribution and research, it’s not commonly found in nurseries or seed catalogs. This scarcity doesn’t necessarily reflect its garden worthiness—it simply means it hasn’t entered mainstream cultivation.

Alternative Considerations

If you’re interested in native grasses but can’t locate sandysoil Indiangrass, consider exploring other Puerto Rican native grass species. Working with local native plant societies, botanical gardens, or conservation groups might help you discover what’s actually available for cultivation in your area.

The Bottom Line

Sandysoil Indiangrass represents the fascinating diversity of Puerto Rico’s native flora. While information about cultivation is limited, its status as a true native makes it worth considering for gardeners passionate about preserving local biodiversity. If you’re lucky enough to find this grass, you’d be growing a piece of Caribbean natural history right in your own backyard.

Just remember: when seeking any rare native plant, always ensure you’re obtaining it from responsible sources that don’t impact wild populations. Happy gardening!

Sandysoil Indiangrass

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

Sorghastrum Nash - Indiangrass

Species

Sorghastrum setosum (Griseb.) Hitchc. - sandysoil Indiangrass

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