Threadleaf Water Nymph Plant Care
Najas filifolia R.R.Haynes
Updated · Sources · How we source care data
Najas filifolia, the narrowleaf naiad or the needleleaf waternymph, is an aquatic plant in the Hydrocharitaceae. It is a rare and little-known species, known from only three counties (Decatur County, Georgia; Santa Rosa County, Florida; and Leon County, Florida.
Full sun to partial shade
At a glance
How do you care for Threadleaf Water Nymph?
Threadleaf Water Nymph grows best in full sun to partial shade.
What Is the Threadleaf Water Nymph?
Threadleaf Water Nymph (Najas filifolia) belongs to the Hydrocharitaceae family within the Najas genus.
Threadleaf Water Nymph displays a submerged aquatic plant growth habit, reaching up to tall with a spread of approximately . Threadleaf Water Nymph produces small inconspicuous flowers.
What Light Does the Threadleaf Water Nymph Need?
Threadleaf Water Nymph thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Soil Mix Works Best for a Threadleaf Water Nymph?
Nutrient-rich aquatic soil with a mixture of clay and organic matter. Good drainage is essential for Threadleaf Water Nymph to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Threadleaf Water Nymph?
Can be left in aquatic containers or ponds. 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 Threadleaf Water Nymph?
Threadleaf Water Nymph can be propagated through division, stem cuttings. Similar propagation techniques also apply to spiny naiad plant care, which shares the same genus.
Is the Threadleaf Water Nymph Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Threadleaf Water Nymph, 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 Threadleaf Water Nymph?
Threadleaf Water Nymph is susceptible to algae, aquatic weeds. 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
Threadleaf Water Nymph 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 Najas genus — compare its care with other Najas species on PlantoScan.
Najas is part of the Hydrocharitaceae plant family — browse all Hydrocharitaceae genera and species.
Threadleaf Water Nymph thrives in bright light and direct sun — see other bright-light plants.
More Najas Species
Other Najas species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Najas filifolia R.R.Haynes, family Hydrocharitaceae (first published in Brittonia 37: 392 (1985)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Threadleaf Water Nymph, 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.
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