Oplismenopsis najada Plant Care
Oplismenopsis najada (Hack. & Arechav.) Parodi
Updated · Sources · How we source care data
Oplismenopsis is a genus of South American plants in the grass family. The only known species is Oplismenopsis najada, native to southern Brazil, Uruguay, and northeastern Argentina.
Every 7–10 days
Full sun to partial shade
60–80°F
40–70%
At a glance
How do you care for Oplismenopsis najada?
Water Oplismenopsis najada every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
What Is the Oplismenopsis najada?
Oplismenopsis najada (Oplismenopsis najada) belongs to the Poaceae family within the Oplismenopsis genus. Oplismenopsis najada is native to southern Brazil, Uruguay, and northeastern Argentina.
Oplismenopsis najada displays a clumping grass-like growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Oplismenopsis najada produces small inconspicuous flowers on tall spikes.
Leaf size: approximately 12 inches.
How Often Should You Water a Oplismenopsis najada?
Oplismenopsis najada requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Oplismenopsis najada Need?
Oplismenopsis najada thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Oplismenopsis najada Prefer?
Oplismenopsis najada grows best at temperatures of 60–80°F. Oplismenopsis najada prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Oplismenopsis najada?
Well-draining sandy loam with added organic matter. Good drainage is essential for Oplismenopsis najada to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Oplismenopsis najada?
Feed Oplismenopsis najada every 6 months 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 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Oplismenopsis najada?
Divide and repot 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 Oplismenopsis najada?
Oplismenopsis najada can be propagated through division, seeds.
Is the Oplismenopsis najada Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Oplismenopsis najada, 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 Oplismenopsis najada?
Oplismenopsis najada is susceptible to aphids, grasshoppers, spider mites. 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 Oplismenopsis najada Need?
Oplismenopsis najada grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Oplismenopsis najada is native to southern Brazil, Uruguay, and northeastern Argentina. In cooler regions, grow Oplismenopsis najada as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Oplismenopsis najada 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 Oplismenopsis genus — compare its care with other Oplismenopsis species on PlantoScan.
Oplismenopsis is part of the Poaceae plant family — browse all Poaceae genera and species.
Oplismenopsis najada 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: Oplismenopsis najada (Hack. & Arechav.) Parodi, family Poaceae (first published in Notas Mus. La Plata, Bot. 2: 4 (1937)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Oplismenopsis najada, 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
Oplismenopsis najada 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