Index / Search / Ruppia maritima
§1 Plant
Ruppia maritima L.
vernacular widgeongrass — species · Ruppiaceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Monocot
- Family
- Ruppiaceae Horan.
- Genus
- Ruppia
§2a
Native status, by region
- AK Alaska Native
- CAN Canada Native
- HI Hawaii Native
- L48 Lower 48 States Native
- PR Puerto Rico Native
- SPM St. Pierre & Miquelon Native
- VI U.S. Virgin Islands Native
§2b
County-level range
· 2 counties across 1 state§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- None
- Shade
- High
- Moisture use
- High
- Fire
- High
- Salinity
- Medium
- Anaerobic
- High
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -2 °F minimum
- pH range
- 5.4–8.5
- Root depth
- 4 in min.
- Fertility need
- Low
- Soil texture
- medium, fine
§3c
Form & growth
- Growth form
- Rhizomatous
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 0.2 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Porous
- Porosity (winter)
- Porous
- Flower colour
- Green
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Mid Spring
- Seed abundance
- Medium
- Seed begins
- Spring
- Seed ends
- Summer
- Spread rate
- Slow
- Stratify
- No
- Propagation
- seed, bare root, sprigs
§3e
Use & availability
- Commercial availability
- No Known Source
- Nursery stock
- No
- Palatable, human
- No
- Protein potential
- Medium
- Lumber
- No
- Christmas tree
- No
§4Counties, by state
Recorded in 2 counties across 1 state.
Rhode Island view state ↗ 2 N ▾
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/RUMA5 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2864004 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T18:27:19Z