Thunbergia grandiflora Plant Care
Thunbergia mindanaensis Bremek.
Updated · Sources · How we source care data
With vibrant yellow flowers that resemble a cheerful smiley face, this plant originates from the Philippines, specifically Mindanao. Its unique floral display and rarity make it a highly sought-after addition to any plant collector's garden.
Every 3–7 days
Bright indirect light
60–85°F
50–80%
At a glance
How do you care for Thunbergia grandiflora?
Water Thunbergia grandiflora every 3–7 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 60–85°F (16–29°C) and 50–80% humidity. Fertilize it every 2 months during the growing season.
Where Is the Thunbergia grandiflora Native To?
What Is the Thunbergia grandiflora?
Thunbergia grandiflora (Thunbergia mindanaensis) belongs to the Acanthaceae family within the Thunbergia genus. Thunbergia grandiflora is native to South and Southeast Asia and China. Thunbergia grandiflora is also known as Blue Skyflower.
Thunbergia grandiflora displays a vining, trailing growth habit, reaching up to 10 ft tall with a spread of approximately 4 ft. Thunbergia grandiflora produces tubular flowers in various colors like yellow, orange, or white.
Leaf size: approximately 4 inches.
How Often Should You Water a Thunbergia grandiflora?
Thunbergia mindanaensis requires watering every 3–7 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 3–7 days
Let soil partially dry between waterings
What Light Does the Thunbergia grandiflora Need?
Thunbergia grandiflora thrives in bright indirect light. Avoid placing Thunbergia grandiflora in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Thunbergia grandiflora Prefer?
Thunbergia mindanaensis grows best at temperatures of 60–85°F. Thunbergia grandiflora prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–85°F
Humidity
50–80%
What Soil Mix Works Best for a Thunbergia grandiflora?
Well-draining, fertile soil with added compost for nutrients. Good drainage is essential for Thunbergia grandiflora to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Thunbergia grandiflora?
Feed Thunbergia grandiflora every 2 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 2 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 Thunbergia grandiflora?
Repot annually 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 Thunbergia grandiflora?
Thunbergia grandiflora can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to black eyed susan vine plant care, which shares the same genus.
Is the Thunbergia grandiflora Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Thunbergia grandiflora, 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 Thunbergia grandiflora?
Thunbergia grandiflora is susceptible to aphids, spider mites, 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.
Keep exploring plants
Thunbergia grandiflora 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 Thunbergia genus — compare its care with other Thunbergia species on PlantoScan.
Thunbergia is part of the Acanthaceae plant family — browse all Acanthaceae genera and species.
Thunbergia grandiflora thrives in bright light and direct sun — see other bright-light plants.
More Thunbergia Species
Other Thunbergia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Thunbergia mindanaensis Bremek., family Acanthaceae (first published in Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2 , 50(4): 72 (1955)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Thunbergia grandiflora, 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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