North America Native Plant

Quillwort Yelloweyed Grass

Botanical name: Xyris isoetifolia

USDA symbol: XYIS

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Quillwort Yelloweyed Grass: A Rare Gem for Wetland Gardens If you’re passionate about native plants and conservation gardening, quillwort yelloweyed grass (Xyris isoetifolia) might just capture your heart—though it comes with some important considerations. This fascinating little perennial represents one of nature’s more specialized creations, perfectly adapted to life in ...

Rare plant alert!

Region: Alabama

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Region: Alabama

Quillwort Yelloweyed Grass: A Rare Gem for Wetland Gardens

If you’re passionate about native plants and conservation gardening, quillwort yelloweyed grass (Xyris isoetifolia) might just capture your heart—though it comes with some important considerations. This fascinating little perennial represents one of nature’s more specialized creations, perfectly adapted to life in wetland environments across the southeastern United States.

What Makes Quillwort Yelloweyed Grass Special

Don’t let the humble appearance fool you—this native forb is quite remarkable. Quillwort yelloweyed grass produces delicate yellow flowers that emerge from slender spikes, creating an understated but charming display. As a herbaceous perennial, it lacks woody tissue but returns year after year, forming grass-like clumps that blend beautifully with other wetland natives.

A Southeastern Native with a Limited Range

Quillwort yelloweyed grass calls the southeastern United States home, with populations naturally occurring in Alabama and Florida. This limited distribution makes it a true regional treasure, perfectly adapted to the unique conditions of the Atlantic and Gulf Coastal Plain regions.

Important Conservation Considerations

Here’s where things get serious: quillwort yelloweyed grass is globally listed as S1, meaning it’s critically imperiled. With typically five or fewer known occurrences and very few remaining individuals (less than 1,000), this species is hanging on by a thread. In Alabama, it’s classified as SH status, indicating it’s presumed extirpated from the state.

What this means for gardeners: If you’re considering growing this plant, it’s absolutely crucial to source it responsibly. Never collect from wild populations—this could push the species closer to extinction. Instead, work with reputable native plant nurseries that propagate from ethically sourced material.

Specialized Growing Requirements

Quillwort yelloweyed grass isn’t your typical garden plant—it’s an obligate wetland species, meaning it almost always occurs in wetland conditions. This specialization makes it perfect for specific garden situations but challenging for general landscaping.

Ideal Garden Applications

This rare native shines in:

  • Bog gardens and constructed wetlands
  • Native plant conservation collections
  • Wetland restoration projects
  • Rain gardens with consistently moist conditions
  • Specialized native plant displays

Growing Conditions and Care

Success with quillwort yelloweyed grass requires recreating its natural wetland habitat:

  • Moisture: Consistently wet to saturated soil conditions
  • Soil: Acidic, organic-rich wetland soils
  • Light: Full sun to partial shade
  • Climate: USDA hardiness zones 8-9
  • Drainage: Poor drainage is actually preferred—this plant loves wet feet

Planting and Maintenance Tips

Given its rarity and specialized needs, growing quillwort yelloweyed grass requires patience and attention to detail:

  • Create a dedicated wetland area or bog garden before planting
  • Maintain consistent soil moisture—never let it dry out
  • Use rainwater or distilled water if your tap water is alkaline
  • Mulch lightly with organic matter to retain moisture
  • Be patient—this species may take time to establish

Should You Grow Quillwort Yelloweyed Grass?

This isn’t a plant for every gardener, but it might be perfect for you if:

  • You have or can create appropriate wetland conditions
  • You’re passionate about plant conservation
  • You enjoy growing rare and unusual natives
  • You have access to responsibly sourced plants
  • You live within or near its native range

However, consider alternatives if you’re looking for low-maintenance options or don’t have the specialized growing conditions this plant requires.

A Plant Worth Protecting

Growing quillwort yelloweyed grass is more than gardening—it’s conservation in action. By cultivating this rare species responsibly, you’re helping preserve a piece of our natural heritage while creating habitat for the specialized ecosystem it supports. Just remember: with great rarity comes great responsibility. Always source ethically and never collect from wild populations.

Whether you choose to grow this botanical treasure or simply appreciate it from afar, quillwort yelloweyed grass serves as a reminder of the incredible diversity hiding in our wetland ecosystems—and why protecting these special places matters more than ever.

Quillwort Yelloweyed Grass

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

Commelinales

Family

Xyridaceae C. Agardh - Yellow-eyed Grass family

Genus

Xyris L. - yelloweyed grass

Species

Xyris isoetifolia Kral - quillwort yelloweyed grass

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