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
Krzysztof Ziarnek, Kenraiz
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.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Source: npn.rngr.net
ORGHPS Germination Guide: 5° night and 25° day