Ovate marsh fern
Thelypteris ovata
Last reviewed: October 2026
Ovate marsh fern (Thelypteris ovata) is a perennial fern native to AL, FL, GA, SC. It blooms in June, July, August, and September. The flowers draw wind (spore dispersal).
Toxicity unknown
Ovate marsh fern (Thelypteris ovata) 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
shade
Water
high
Size
12"–24" H × 18"–30" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, FL, GA, SC
Pollinators
wind (spore dispersal)
Before you buy
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Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 458 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
A spreading fern of moist woodland with soft, finely divided fronds that form a neat, rhizomatous colony across shaded, damp ground. It fills in evenly rather than clumping.
Growing Ovate marsh fern
Grow Ovate marsh fern in shade and high water. Mature plants reach 12 to 24 inches tall and spread 18 to 30 inches wide.
Wildlife value
As a spore-producing fern it offers no floral resources, but its dense fronds provide humid ground cover that supports amphibians and beneficial insects.
Common questions
- How much sun does Ovate marsh fern need?
- Ovate marsh fern grows best in shade conditions.
- When does Ovate marsh fern bloom?
- Ovate marsh fern blooms in June, July, August, and September.
- Where is Ovate marsh fern native?
- Ovate marsh fern (Thelypteris ovata) is native to AL, FL, GA, SC, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Ovate marsh fern attract?
- Ovate marsh fern draws wind (spore dispersal).
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 Ovate marsh fern? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.