Smooth Saw-grass
Cladium mariscoides
Last reviewed: August 2026

Toxicity unknown
Smooth Saw-grass (Cladium mariscoides) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
high
Size
24"–60" H × 12"–24" W
Bloom
Jun, Jul, Aug
Native to
AL, CT, DE, FL and 19 more states
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Smooth saw-grass is a tall wetland sedge that forms upright clumps with narrow, arching green leaves. It produces small brownish flower clusters in summer and thrives in consistently moist to wet soils in full sun. This native grass works well in rain gardens, pond edges, and other water-wise landscaping applications.
In an HOA neighborhood
Smooth Saw-grass takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Very tall and wild-looking appearance
- Requires wetland conditions unsuitable for typical lawns
- Can appear unkempt compared to conventional landscaping
Wildlife value
The seeds provide food for waterfowl and wetland birds. The dense clumps offer nesting habitat and cover for amphibians and small wildlife in wet areas.
Common questions
- How much sun does Smooth Saw-grass need?
- Smooth Saw-grass grows best in full sun conditions.
- When does Smooth Saw-grass bloom?
- Smooth Saw-grass blooms in June, July, and August.
- Where is Smooth Saw-grass native?
- Smooth Saw-grass (Cladium mariscoides) is native to AL, CT, DE, FL and 19 more states, per the World Checklist of Vascular Plants (Kew).
- Is Smooth Saw-grass HOA-friendly?
- Smooth Saw-grass takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Smooth Saw-grass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz