North America Native Plant

Curtis’ Star-grass

Botanical name: Hypoxis curtissii

USDA symbol: HYCU5

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Hypoxis hirsuta (L.) Coville var. leptocarpa (Engelm. & A. Gray) Brackett (HYHIL)  âš˜  Hypoxis leptocarpa (Engelm. & A. Gray) Small (HYLE2)   

Curtis’ Star-Grass: A Delicate Native Gem for Wetland Gardens If you’re looking to add a touch of understated elegance to your native garden, Curtis’ star-grass (Hypoxis curtissii) might just be the perfect choice. This charming little perennial brings tiny bursts of sunshine to wet areas where many other flowering plants ...

Rare plant alert!

Region: Arkansas

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) ⚘

Curtis’ Star-Grass: A Delicate Native Gem for Wetland Gardens

If you’re looking to add a touch of understated elegance to your native garden, Curtis’ star-grass (Hypoxis curtissii) might just be the perfect choice. This charming little perennial brings tiny bursts of sunshine to wet areas where many other flowering plants struggle to thrive.

What Makes Curtis’ Star-Grass Special?

Curtis’ star-grass is a native forb that produces delicate, six-petaled yellow flowers that truly resemble tiny stars scattered across grass-like foliage. Unlike showier garden favorites, this plant offers subtle beauty that rewards close observation. The small blooms appear throughout spring and summer, creating gentle drifts of color in naturalized settings.

As a perennial herb, Curtis’ star-grass lacks woody stems but returns year after year from underground structures, making it a reliable addition to your garden once established.

Where Curtis’ Star-Grass Calls Home

This southeastern native has made itself at home across eight states: Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, and Texas. It’s perfectly adapted to the warm, humid conditions of the southeastern United States.

Important Conservation Note

Before you rush to add Curtis’ star-grass to your garden, there’s something important to know: this species has a rarity status of S1 in Arkansas, meaning it’s critically imperiled in that state. If you’re interested in growing this plant, please only source it from reputable native plant nurseries that propagate their stock responsibly rather than collecting from wild populations.

Perfect Spots for Curtis’ Star-Grass

Curtis’ star-grass thrives in USDA hardiness zones 8-10, making it ideal for southern gardeners. Its wetland status as Facultative Wetland means it usually prefers moist conditions but can adapt to drier spots when needed.

This adaptable native works beautifully in:

  • Rain gardens and bioswales
  • Meadow gardens and prairies
  • Wetland restoration areas
  • Native plant communities
  • Naturalized landscapes

Growing Conditions That Make It Happy

Curtis’ star-grass appreciates:

  • Moist to wet soils (though it can handle some drought)
  • Full sun to partial shade
  • Areas that experience seasonal flooding
  • Well-draining soils that don’t stay waterlogged year-round

Benefits for Wildlife and Pollinators

While Curtis’ star-grass may seem modest, it plays an important role in supporting local ecosystems. The small yellow flowers attract native bees, small butterflies, and other pollinators who appreciate the accessible nectar source. As part of a diverse native plant community, it contributes to the complex web of relationships that support healthy wildlife populations.

Planting and Care Tips

Getting Curtis’ star-grass established is relatively straightforward:

  • Plant in spring after the last frost
  • Ensure consistent moisture, especially during the first growing season
  • Mulch lightly to retain soil moisture
  • Be patient – like many natives, it may take time to establish
  • Allow the plant to go dormant naturally during extreme heat or drought
  • Minimal fertilization needed – native plants prefer lean soils

Why Choose Curtis’ Star-Grass?

While Curtis’ star-grass won’t win any awards for showiness, it offers something increasingly rare in our gardens: quiet beauty and ecological value. It’s perfect for gardeners who appreciate subtle charm and want to support native wildlife while creating naturalized spaces that feel like extensions of the local landscape.

By choosing responsibly sourced Curtis’ star-grass, you’re not only adding a unique native to your garden but also supporting conservation efforts for this special southeastern species. Sometimes the most rewarding garden additions are the ones that whisper rather than shout.

Curtis’ Star-grass

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Hypoxis L. - star-grass

Species

Hypoxis curtissii Rose - Curtis' star-grass

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