Neptune Grass Plant Care
Amphibolis antarctica Asch.
Updated · Sources · How we source care data
Amphibolis antarctica is a species of flowering plant in the family Cymodoceaceae. It is referred to by the common names wire weed or sea nymph, and is a seagrass found in coastal waters of southern and western Australia.
Full sun to partial shade
At a glance
How do you care for Neptune Grass?
Neptune Grass grows best in full sun to partial shade.
Where Is the Neptune Grass Native To?
What Is the Neptune Grass?
Neptune Grass (Amphibolis antarctica) belongs to the Cymodoceaceae family within the Amphibolis genus. Neptune Grass is native to coastal waters of southern and western Australia. Neptune Grass is also known as Sea Grass.
Neptune Grass displays a submerged aquatic plant growth habit, reaching up to tall with a spread of approximately . Neptune Grass produces small inconspicuous flowers.
What Light Does the Neptune Grass Need?
Neptune Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Soil Mix Works Best for a Neptune Grass?
Sandy, well-draining soil with high salt tolerance. Good drainage is essential for Neptune Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Neptune Grass?
Does not require traditional potting, suitable for 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 Neptune Grass?
Neptune Grass can be propagated through seeds. Similar propagation techniques also apply to griffin's amphibolis plant care, which shares the same genus.
Is the Neptune Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Neptune 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 Neptune Grass?
Neptune Grass is susceptible to generally pest-resistant. 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.
Keep exploring plants
Neptune 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 Amphibolis genus — compare its care with other Amphibolis species on PlantoScan.
Amphibolis is part of the Cymodoceaceae plant family — browse all Cymodoceaceae genera and species.
Neptune 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: Amphibolis antarctica Asch., family Cymodoceaceae (first published in Linnaea 35: 164 (1867)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Neptune 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.
- 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
Neptune 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