Photo: Pranav Chandra BoseCC BY 4.0via iNaturalistresized / cropped
Rhynchoglossum notonianum Plant Care
Rhynchoglossum notonianum (Wall.) B.L.Burtt
Updated · Sources · How we source care data
This plant is easily identifiable by its unique combination of glossy, heart-shaped leaves and delicate, fragrant white flowers. Originating from Southeast Asia, Rhynchoglossum notonianum is highly sought after by plant collectors for its stunning foliage and ornamental value in indoor spaces.
Every 7–10 days
Bright indirect light
65–75°F
50–70%
At a glance
How do you care for Rhynchoglossum notonianum?
Water Rhynchoglossum notonianum 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 month during the growing season.
What Is the Rhynchoglossum notonianum?
Rhynchoglossum notonianum (Rhynchoglossum notonianum) belongs to the Gesneriaceae family within the Rhynchoglossum genus. Rhynchoglossum notonianum is native to South India and Sri Lanka.
Rhynchoglossum notonianum displays a low rosette, spreading growth habit, reaching up to 1 ft tall with a spread of approximately 2 ft. Rhynchoglossum notonianum produces tubular flowers in shades of red, orange, or yellow.
Leaf size: approximately 2 inches.
How Often Should You Water a Rhynchoglossum notonianum?
Rhynchoglossum notonianum 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 Rhynchoglossum notonianum Need?
Rhynchoglossum notonianum thrives in bright indirect light. Avoid placing Rhynchoglossum notonianum in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Rhynchoglossum notonianum Prefer?
Rhynchoglossum notonianum grows best at temperatures of 65–75°F. Rhynchoglossum notonianum 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 Rhynchoglossum notonianum?
Well-draining, rich potting mix with added perlite for aeration. Good drainage is essential for Rhynchoglossum notonianum to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Rhynchoglossum notonianum?
Feed Rhynchoglossum notonianum every month 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 month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Rhynchoglossum notonianum?
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 Rhynchoglossum notonianum?
Rhynchoglossum notonianum can be propagated through leaf cuttings, division, seeds.
Is the Rhynchoglossum notonianum Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Rhynchoglossum notonianum, 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 Rhynchoglossum notonianum?
Rhynchoglossum notonianum is susceptible to spider mites, aphids, mealybugs. 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 Rhynchoglossum notonianum Need?
Rhynchoglossum notonianum grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Rhynchoglossum notonianum is native to South India and Sri Lanka. In cooler regions, grow Rhynchoglossum notonianum as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 10b – 12b
Keep exploring plants
Rhynchoglossum notonianum 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 Rhynchoglossum genus — compare its care with other Rhynchoglossum species on PlantoScan.
Rhynchoglossum is part of the Gesneriaceae plant family — browse all Gesneriaceae genera and species.
Rhynchoglossum notonianum 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: Rhynchoglossum notonianum (Wall.) B.L.Burtt, family Gesneriaceae (first published in Notes Roy. Bot. Gard. Edinburgh 24: 170 (1962)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Rhynchoglossum notonianum, 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.
- Photo: Pranav Chandra Bose, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 10b – 12b, estimated from the plant's typical growing conditions.
- 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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