Neriacanthus harlingii Plant Care
Neriacanthus harlingii Wassh.
Updated · Sources · How we source care data
The Neriacanthus harlingii is easily recognizable by its vibrant red tubular flowers with white-tipped petals. Originating from the tropical regions of Ecuador, this plant is highly sought after by collectors for its unique and striking appearance, adding a pop of color to any garden or indoor space.
Every 7–10 days
Bright indirect light
65–75°F
50–70%
At a glance
How do you care for Neriacanthus harlingii?
Water Neriacanthus harlingii every 7–10 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 65–75°F (18–24°C) and 50–70% humidity. Fertilize it every 4 months during the growing season.
Where Is the Neriacanthus harlingii Native To?
What Is the Neriacanthus harlingii?
Neriacanthus harlingii (Neriacanthus harlingii) belongs to the Acanthaceae family within the Neriacanthus genus. Neriacanthus harlingii is native to Ecuador.
Neriacanthus harlingii displays a compact, clumping perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Neriacanthus harlingii produces showy spikes of tubular flowers in various colors.
Leaf size: approximately 6 inches.
How Often Should You Water a Neriacanthus harlingii?
Neriacanthus harlingii 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 Neriacanthus harlingii Need?
Neriacanthus harlingii thrives in bright indirect light. Avoid placing Neriacanthus harlingii in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Neriacanthus harlingii Prefer?
Neriacanthus harlingii grows best at temperatures of 65–75°F. Neriacanthus harlingii prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–75°F
Humidity
50–70%
What Soil Mix Works Best for a Neriacanthus harlingii?
Well-draining, rich loamy soil with added perlite for improved drainage. Good drainage is essential for Neriacanthus harlingii to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Neriacanthus harlingii?
Feed Neriacanthus harlingii every 4 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 4 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 Neriacanthus harlingii?
Repot every 1-2 years in 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 Neriacanthus harlingii?
Neriacanthus harlingii can be propagated through stem cuttings, division.
Is the Neriacanthus harlingii Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Neriacanthus harlingii, 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 Neriacanthus harlingii?
Neriacanthus harlingii is susceptible to spider mites, aphids, whiteflies. 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 Neriacanthus harlingii Need?
Neriacanthus harlingii grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Neriacanthus harlingii is native to Ecuador. In cooler regions, grow Neriacanthus harlingii as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Neriacanthus harlingii 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 Neriacanthus genus — compare its care with other Neriacanthus species on PlantoScan.
Neriacanthus is part of the Acanthaceae plant family — browse all Acanthaceae genera and species.
Neriacanthus harlingii 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: Neriacanthus harlingii Wassh., family Acanthaceae (first published in Opera Bot. 92: 271 (1987)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Neriacanthus harlingii, 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 13b, 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.
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