North America Native Plant

Coastal Sand Sedge

Botanical name: Carex incurviformis var. danaensis

USDA symbol: CAIND

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Coastal Sand Sedge: A Rare Native Grass Worth Knowing About Meet the coastal sand sedge (Carex incurviformis var. danaensis), a lesser-known native perennial that’s quietly making its home across several western states. While this particular variety might not be the showiest plant in your garden center, it represents an interesting ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Coastal Sand Sedge: A Rare Native Grass Worth Knowing About

Meet the coastal sand sedge (Carex incurviformis var. danaensis), a lesser-known native perennial that’s quietly making its home across several western states. While this particular variety might not be the showiest plant in your garden center, it represents an interesting piece of America’s native plant puzzle that’s worth understanding.

What Exactly Is Coastal Sand Sedge?

Coastal sand sedge belongs to the sedge family (Cyperaceae), making it a grass-like perennial rather than a true grass. Think of sedges as the quiet cousins of grasses – they look similar at first glance but have their own unique characteristics that set them apart. This particular variety is native to the lower 48 states, which means it has been quietly thriving in American landscapes long before any of us were around to notice.

Where Does It Call Home?

You’ll find coastal sand sedge naturally growing across a surprisingly diverse range of states: California, Colorado, Montana, and Wyoming. This geographic spread tells us something interesting – this little sedge is quite the traveler, adapting to different climates and conditions across the American West.

The Rarity Factor: Handle With Care

Here’s where things get interesting (and a bit concerning). Coastal sand sedge has a global conservation status of S4S5T3Q, which puts it in a somewhat vulnerable category. This means that while it’s not critically endangered, it’s not exactly common either. If you’re thinking about growing this sedge, sourcing responsibly is absolutely crucial – we want to appreciate these plants without putting additional pressure on wild populations.

Should You Grow Coastal Sand Sedge?

This is where I have to be honest with you: specific growing information for this particular variety is quite limited. Unlike more common native plants that have been extensively studied and cultivated, coastal sand sedge remains something of a mystery in horticultural circles.

What we do know is that as a native sedge, it likely prefers:

  • Well-draining soil conditions
  • Moderate water requirements
  • Conditions similar to its natural habitat

Growing Considerations

If you’re determined to try growing coastal sand sedge, here’s what you should keep in mind:

  • Source responsibly: Only purchase from reputable native plant nurseries that can verify their plants are nursery-propagated, not wild-collected
  • Research your local conditions: Since this plant grows across diverse climates, understanding your specific regional growing conditions is essential
  • Start small: Given the limited growing information available, consider this an experimental addition rather than a landscape staple
  • Connect with experts: Reach out to local native plant societies or extension services for region-specific advice

The Bottom Line

Coastal sand sedge represents the fascinating complexity of native plant communities – there are countless species quietly doing their ecological work without much fanfare. While this particular sedge might not be the easiest choice for beginning native gardeners, it serves as a reminder of how much we still have to learn about our native flora.

If you’re interested in supporting native sedges in your landscape, consider starting with more well-documented species that can provide similar ecological benefits while we continue to learn more about rare varieties like coastal sand sedge. Sometimes the best way to appreciate a rare plant is to support its more common relatives and the ecosystems they all call home.

Coastal Sand Sedge

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

Cyperaceae Juss. - Sedge family

Genus

Carex L. - sedge

Species

Carex incurviformis Mack. - coastal sand sedge

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