Seaside Arrowgrass
Triglochin maritima
Also known as: Slender Arrowgrass
- Native to:
- Afghanistan, Algeria, Argentina, Austria, Baltic States, Belarus, Belgium, Bolivia, Bulgaria, Canada, Chile, China, Czechia-Slovakia, Denmark, Finland, Føroyar, France, Germany, Hungary, Iceland, India, Iran, Ireland, Italy, Japan, Kazakhstan, Kirgizstan, Korea, Krym, Kuril Is., Labrador, Mexico, Nepal, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Pakistan, Poland, Portugal, Prince Edward I., Romania, Russia, Spain, Sweden, Tadzhikistan, Transcaucasus, Tunisia, Türkiye, Ukraine, United States
iNaturalist: © dgreenberger (iNaturalist #85291583)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Juncaginaceae
- Genus:
- Triglochin
- Species:
- Triglochin maritima
- USDA Symbol:
- TRMA20
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- green
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, shorebirds
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- saline, nutrient-poor, sandy or clay soil
- pH:
- 5.5 - 8.0 (slightly acidic to alkaline)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in salt marshes and coastal areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds germinate best in saturated or flooded conditions. Cold stratification improves germination rates.
Pre-treatment: None required
Source: npn.rngr.net
ORGHPS Germination Guide: 5° night and 25° day