Water Parsely
Oenanthe sarmentosa
- Native to:
- Canada, United States
Walter Siegmund (talk)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Apiaceae
- Genus:
- Oenanthe
- Species:
- Oenanthe sarmentosa
- USDA Symbol:
- OESA
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 120 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- white
Wildlife Benefits
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Agonopterix oregonensis, Agonopterix rosaciliella, Depressaria daucella, Anise Swallowtail (Papilio zelicaon)
Reported Fauna Sightings
Bees: Yellow-faced bumble bee (Bombus vosnesenskii)
Garden & Ecology Notes
- Wildlife Value:
- birds, pollinators
Soil Requirements
- Soil Type:
- rich, moisture-retentive loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Commonly found in wetlands and along stream banks.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 14–60 days
- Notes:
- Seeds require cold stratification and moist conditions. Germination can be erratic.
The above propagation data sourced from Claude AI
Pre-treatment: Soak seeds for 24 hours. Cold stratify for 21 to 30 days.
Establishment: Seeds are collected between August 15th and September 15th. Mature inflorescences are brown. O. sarmentosa is found in marshes and sluggish water from California to British Columbia and east to Idaho.
Source: npn.rngr.net