Photo: no rights reservedCC0 1.0via iNaturalist
American Eelgrass Plant Care
Vallisneria americana Michx.
Updated · Sources · How we source care data
Vallisneria americana, also known as American eelgrass, is a popular aquatic plant among aquarium enthusiasts due to its long, ribbon-like leaves that can grow up to several feet in length. Originating from North America, this plant is commonly found in freshwater bodies such as lakes and rivers.
Every 10–14 days
Full sun to partial shade
68–82°F
50–70%
At a glance
How do you care for American Eelgrass?
Water American Eelgrass every 10–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 68–82°F (20–28°C) and 50–70% humidity. Fertilize it every month during the growing season.
Where Is the American Eelgrass Native To?
What Is the American Eelgrass?
American Eelgrass (Vallisneria americana) belongs to the Hydrocharitaceae family within the Vallisneria genus. American Eelgrass is native to the Americas, especially eastern North America. American Eelgrass is also known as Eelgrass, Water Celery.
American Eelgrass displays a submerged aquatic plant growth habit, reaching up to 6 ft tall with a spread of approximately . American Eelgrass produces small inconspicuous flowers that float on the water's surface.
Leaf size: approximately 14 inches.
How Often Should You Water a American Eelgrass?
Vallisneria americana requires watering every 10–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 10–14 days
Let soil partially dry between waterings
What Light Does the American Eelgrass Need?
American Eelgrass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the American Eelgrass Prefer?
Vallisneria americana grows best at temperatures of 68–82°F. American Eelgrass prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
68–82°F
Humidity
50–70%
What Soil Mix Works Best for a American Eelgrass?
Nutrient-rich, loamy soil with good organic content. Good drainage is essential for American Eelgrass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a American Eelgrass?
Feed American Eelgrass every month during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a American Eelgrass?
Does not require traditional potting, best grown in aquatic environments. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a American Eelgrass?
American Eelgrass can be propagated through by seeds or division of rhizomes.
Is the American Eelgrass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list American Eelgrass, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the American Eelgrass?
American Eelgrass is susceptible to algae, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the American Eelgrass Need?
American Eelgrass grows outdoors in USDA Zone 4a – 10b. It survives winters down to planting zone 4a. American Eelgrass is native to the Americas, especially eastern North America.
Hardiness Zone
Zone 4a – 10b
Keep exploring plants
American Eelgrass is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Vallisneria genus (family Hydrocharitaceae) — search all Vallisneria species in the plant lookup.
American Eelgrass thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Vallisneria americana Michx., family Hydrocharitaceae (first published in Fl. Bor.-Amer. 2: 220 (1803)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list American Eelgrass, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Public domain, CC0 1.0, iNaturalist — original.
- Hardiness zone: USDA Zone 4a – 10b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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