North America Native Plant

El Pulguero Flatsedge

Botanical name: Cyperus pulguerensis

USDA symbol: CYPU15

Life cycle: perennial

Habit: grass

Native status: Native to Puerto Rico  

El Pulguero Flatsedge: A Rare Puerto Rican Sedge Worth Protecting Meet El Pulguero flatsedge (Cyperus pulguerensis), one of Puerto Rico’s most elusive native plants. This perennial sedge is so rare that even botanists know very little about it – making it both fascinating and concerning from a conservation perspective. Where ...

El Pulguero Flatsedge: A Rare Puerto Rican Sedge Worth Protecting

Meet El Pulguero flatsedge (Cyperus pulguerensis), one of Puerto Rico’s most elusive native plants. This perennial sedge is so rare that even botanists know very little about it – making it both fascinating and concerning from a conservation perspective.

Where Does El Pulguero Flatsedge Call Home?

This mysterious sedge is endemic to Puerto Rico, meaning you won’t find it growing anywhere else in the world. As a member of the sedge family (Cyperaceae), it’s a grass-like plant that likely once played an important role in the island’s natural ecosystems.

The Mystery Plant: What We Know (And Don’t Know)

Here’s where things get interesting – and a bit troubling. El Pulguero flatsedge is so poorly documented that we lack basic information about:

  • Its physical appearance and size
  • Preferred growing conditions
  • Ecological role and wildlife benefits
  • Current population status
  • Specific habitat requirements

This lack of information often indicates a species that’s either extremely rare or possibly even extinct in the wild.

Should You Try to Grow El Pulguero Flatsedge?

Here’s the short answer: probably not, and here’s why. When a native plant is this poorly documented, it usually means it’s incredibly rare and potentially at risk of extinction. Without proper botanical studies, we don’t know:

  • How to successfully cultivate it
  • What growing conditions it needs
  • Whether harvesting seeds or plants would harm wild populations
  • Its conservation status

Better Alternatives for Your Puerto Rican Garden

If you’re gardening in Puerto Rico and want to support native sedges, consider these better-documented alternatives that you can grow responsibly:

  • Other native Cyperus species that are more common
  • Native grasses and sedges with known cultivation requirements
  • Well-documented Puerto Rican native plants that support local wildlife

How You Can Help

Instead of trying to grow this rare sedge, here’s how you can make a real difference:

  • Support conservation efforts in Puerto Rico that protect native plant habitats
  • Choose well-documented native plants for your garden that provide similar ecological benefits
  • Report any sightings of unusual sedges to local botanists or conservation organizations
  • Advocate for botanical research funding to better understand Puerto Rico’s rare flora

The Bigger Picture

El Pulguero flatsedge represents a conservation challenge facing many tropical islands: plants disappearing faster than we can study them. Climate change, habitat loss, and development pressure threaten species before we even understand what we’re losing.

While we can’t recommend growing this mysterious sedge, its story reminds us why protecting natural habitats and supporting botanical research matters. Every rare plant like El Pulguero flatsedge is a piece of Puerto Rico’s natural heritage – and once it’s gone, it’s gone forever.

So next time you’re planning your native garden, remember that sometimes the best way to honor a rare plant is to protect its wild home rather than trying to bring it into cultivation.

El Pulguero Flatsedge

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

Cyperus L. - flatsedge

Species

Cyperus pulguerensis M.T. Strong - El Pulguero flatsedge

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