North America Native Plant

Hammock Sedge

Botanical name: Carex fissa var. aristata

USDA symbol: CAFIA

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Hammock Sedge: A Rare Native Treasure for Southern Gardens If you’re passionate about native plants and love supporting local ecosystems, hammock sedge (Carex fissa var. aristata) might just capture your gardening heart. This perennial sedge is a true Southern native, but here’s the catch – it’s quite the rare find, ...

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) ⚘

Hammock Sedge: A Rare Native Treasure for Southern Gardens

If you’re passionate about native plants and love supporting local ecosystems, hammock sedge (Carex fissa var. aristata) might just capture your gardening heart. This perennial sedge is a true Southern native, but here’s the catch – it’s quite the rare find, making it both special and worthy of careful consideration.

Where Does Hammock Sedge Call Home?

Hammock sedge is native to the southeastern United States, naturally occurring in Florida, Georgia, Louisiana, Mississippi, and South Carolina. This grass-like beauty has evolved specifically for Southern growing conditions, making it perfectly adapted to the region’s climate and ecosystem needs.

The Rarity Factor: Handle with Care

Before you get too excited about adding this native gem to your garden, there’s something important you need to know. Hammock sedge has a rarity status of S1 in Alabama, which means it’s critically imperiled in that state. This rarity status is a red flag that tells us this plant needs our protection, not our exploitation.

What does this mean for you as a gardener? If you’re determined to grow hammock sedge, you must – and I can’t stress this enough – only source it from reputable native plant nurseries that propagate their plants responsibly. Never collect from wild populations, as this could further threaten already vulnerable populations.

Why Choose Hammock Sedge?

As a native sedge, hammock sedge offers several benefits that make it worth considering:

  • Perfectly adapted to southeastern growing conditions
  • Supports local wildlife and ecosystem health
  • Requires minimal intervention once established
  • Adds authentic regional character to native plant gardens
  • Helps preserve genetic diversity of native flora

Growing Hammock Sedge Successfully

Since specific growing information for this rare variety is limited, here’s what we can infer based on its sedge family traits and native habitat:

Growing Conditions: Like most sedges, hammock sedge likely prefers moist to wet conditions and can tolerate partial shade to full sun. Given its native range, it should thrive in USDA hardiness zones typical of the southeastern states (approximately zones 8-10).

Landscape Role: Use hammock sedge in naturalized areas, rain gardens, or native plant collections where its grass-like texture can add movement and authentic regional appeal. It’s perfect for gardeners creating habitat gardens or working on ecological restoration projects.

Planting and Care Tips

Since this is a rare native, treat it with the respect it deserves:

  • Plant in spring or fall when temperatures are moderate
  • Provide consistent moisture, especially during establishment
  • Mulch around plants to retain moisture and suppress weeds
  • Avoid fertilizers – native sedges typically prefer lean soils
  • Allow natural seed dispersal to help the species spread (if conditions are right)

The Bottom Line

Hammock sedge is a fascinating native plant that deserves our admiration and protection. While it can be a wonderful addition to the right garden, its rarity means we need to approach it thoughtfully. If you can source it responsibly and provide appropriate growing conditions, you’ll be helping preserve a piece of southeastern botanical heritage while creating habitat for local wildlife.

Remember: with rare plants comes great responsibility. Choose wisely, source ethically, and garden with conservation in mind.

Hammock 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 fissa Mack. - hammock sedge

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