American beach grass Plant Care
Ammophila breviligulata Fernald
Updated · Sources · How we source care data
Ammophila breviligulata is a species of grass native to eastern North America, where it grows on sand dunes along the Atlantic Ocean and Great Lakes coasts. Beachgrass thrives under conditions of shifting sand, sand burial, and high winds; it is a dune-building grass that builds the first line of sand dunes along the coast.
Every 7–14 days
Full sun
60–85°F
40–70%
At a glance
How do you care for American beach grass?
Water American beach grass every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun. It prefers temperatures of 60–85°F (16–29°C) and 40–70% humidity.
Where Is the American beach grass Native To?
What Is the American beach grass?
American beach grass (Ammophila breviligulata) belongs to the Poaceae family within the Ammophila genus. American beach grass is native to eastern North America. American beach grass is also known as Beach grass, Dune grass.
American beach grass displays a tall, grassy clumps growth habit, reaching up to 5 ft tall with a spread of approximately 2 ft. American beach grass produces inconspicuous flowers on tall spikes.
Leaf size: approximately 12 inches.
How Often Should You Water a American beach grass?
Ammophila breviligulata requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the American beach grass Need?
American beach grass thrives in full sun.
Light Requirement
Full sun
What Temperature and Humidity Does the American beach grass Prefer?
Ammophila breviligulata grows best at temperatures of 60–85°F. American beach grass prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a American beach grass?
Well-draining sandy soil with low fertility. Good drainage is essential for American beach grass to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a American beach grass?
Divide clumps every 2-3 years in early spring. 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 beach grass?
American beach grass can be propagated through seeds. Similar propagation techniques also apply to european marram grass plant care, which shares the same genus.
Is the American beach grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list American beach grass, 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 beach grass?
American beach grass is susceptible to grasshoppers, aphids. 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 beach grass Need?
American beach grass grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. American beach grass is native to eastern North America. In cooler regions, grow American beach grass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
American beach grass 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 Ammophila genus — compare its care with other Ammophila species on PlantoScan.
Ammophila is part of the Poaceae plant family — browse all Poaceae genera and species.
American beach grass 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: Ammophila breviligulata Fernald, family Poaceae (first published in Rhodora 22: 71 (1920)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list American beach grass, 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.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- 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.
Identify Plants Like the
American beach grass Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species