North America Native Plant

Lemmon’s Sedge

Botanical name: Carex lemmonii

USDA symbol: CALE7

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Carex abramsii Mack. (CAAB17)  âš˜  Carex albida L.H. Bailey (CAAL4)  âš˜  Carex luzulifolia W. Boott f. albida (L.H. Bailey) Kük. (CALUA4)  âš˜  Carex sonomensis Stacey (CASO13)   

Lemmon’s Sedge: A Rare California Wetland Treasure Worth Protecting If you’re drawn to rare native plants and have a passion for wetland gardening, Lemmon’s sedge (Carex lemmonii) might just capture your heart. This unassuming California native is more than just another grass-like plant – it’s a botanical treasure that needs ...

Rare plant alert!

Region: United States

Status: S1Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ 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) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Lemmon’s Sedge: A Rare California Wetland Treasure Worth Protecting

If you’re drawn to rare native plants and have a passion for wetland gardening, Lemmon’s sedge (Carex lemmonii) might just capture your heart. This unassuming California native is more than just another grass-like plant – it’s a botanical treasure that needs our help to survive.

What Makes Lemmon’s Sedge Special?

Lemmon’s sedge is a perennial sedge that belongs to the diverse Carex family. Don’t let its humble appearance fool you – this little plant has quite the story. As a true California native, it’s perfectly adapted to the Golden State’s unique wetland environments. You might also see it listed under several synonyms in older botanical references, including Carex abramsii, Carex albida, or Carex sonomensis.

Where Does It Come From?

This sedge calls California home and only California. It’s what botanists call an endemic species, meaning it naturally occurs nowhere else on Earth. Within the state, Lemmon’s sedge has very specific habitat requirements that limit where it can thrive.

The Rarity Reality Check

Here’s the important part: Lemmon’s sedge is classified as Endangered, which means it’s at serious risk of disappearing forever. Its global conservation status reflects just how precarious its situation has become. If you’re considering adding this plant to your garden, please ensure you’re sourcing it responsibly from reputable native plant nurseries that propagate rather than wild-collect their plants.

Growing Lemmon’s Sedge: Not for Beginners

Let’s be honest – this isn’t your typical garden plant. Lemmon’s sedge is what we call an obligate wetland species, meaning it almost always needs wet conditions to survive. Think of it as nature’s way of saying I’m a water baby!

Ideal Growing Conditions

  • Water requirements: Consistently moist to wet soil – think bog-like conditions
  • Sunlight: Full sun to partial shade
  • Climate zones: USDA zones 8-10 (California’s Mediterranean climate)
  • Soil type: Wetland soils with good organic content

Is This Plant Right for Your Garden?

Lemmon’s sedge isn’t suited for typical residential landscapes. Instead, it shines in specialized settings like:

  • Wetland restoration projects
  • Rain gardens with consistent moisture
  • Native plant preserves
  • Conservation-focused botanical collections

Wildlife and Ecosystem Benefits

As a native wetland plant, Lemmon’s sedge plays an important role in California’s aquatic ecosystems. While it’s wind-pollinated rather than insect-pollinated, it contributes to the overall health and stability of wetland habitats that countless other species depend on.

The Bottom Line

Should you grow Lemmon’s sedge? If you have the right conditions and a commitment to conservation, absolutely – but only with responsibly sourced plants. This rare native deserves our protection and thoughtful cultivation. However, if you’re looking for an easy-care garden sedge, you might want to consider other California native Carex species that are more widely available and better suited to typical garden conditions.

Remember, every garden can be a small act of conservation. By choosing to grow rare natives like Lemmon’s sedge responsibly, you’re helping preserve California’s unique botanical heritage for future generations.

Lemmon’s 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 lemmonii W. Boott - Lemmon's sedge

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