Image: AI generated
Annual Clockvine Plant Care
Thunbergia annua Hochst.
Updated · Sources · How we source care data
This plant's unique trumpet-shaped flowers feature a striking bright yellow or orange hue, making it a standout in any garden. Originating from tropical Africa, Thunbergia annua is highly sought after by plant collectors for its eye-catching colors and ability to attract pollinators like butterflies and hummingbirds.
Every 3–7 days
Bright indirect light
65–85°F
50–70%
At a glance
How do you care for Annual Clockvine?
Water Annual Clockvine every 3–7 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 65–85°F (18–29°C) and 50–70% humidity. Fertilize it every 2 months during the growing season.
Where Is the Annual Clockvine Native To?
- Algeria
- Angola
- Benin
- Botswana
- Burkina Faso
- Burundi
- Cameroon
- Cape Verde
- Central African Republic
- Chad
- Côte d'Ivoire
- Djibouti
- DR Congo
- Egypt
- Equatorial Guinea
- Eritrea
- Eswatini
- Ethiopia
- Gabon
- Ghana
- Guinea
- Guinea-Bissau
- Kenya
- Lesotho
- Liberia
- Libya
- Madagascar
- Malawi
- Mali
- Mauritania
- Morocco
- Mozambique
- Namibia
- Niger
- Nigeria
- Republic of the Congo
- Rwanda
- Sao Tome and Principe
- Senegal
- Sierra Leone
- Somalia
- South Africa
- South Sudan
- Sudan
- Tanzania
- The Gambia
- Togo
- Tunisia
- Uganda
- Zambia
- Zimbabwe
What Is the Annual Clockvine?
Annual Clockvine (Thunbergia annua) belongs to the Acanthaceae family within the Thunbergia genus. Annual Clockvine is native to multiple countries within Africa.
Annual Clockvine displays a vining, trailing growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Annual Clockvine produces tubular flowers in various colors like yellow, orange, or white.
Leaf size: approximately 2 inches.
How Often Should You Water a Annual Clockvine?
Thunbergia annua 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 Annual Clockvine Need?
Annual Clockvine thrives in bright indirect light. Avoid placing Annual Clockvine in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Annual Clockvine Prefer?
Thunbergia annua grows best at temperatures of 65–85°F. Annual Clockvine prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–85°F
Humidity
50–70%
What Soil Mix Works Best for a Annual Clockvine?
Well-draining, fertile soil with added compost for nutrients. Good drainage is essential for Annual Clockvine to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Annual Clockvine?
Feed Annual Clockvine 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 Annual Clockvine?
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 Annual Clockvine?
Annual Clockvine 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 Annual Clockvine Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Annual Clockvine, 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 Annual Clockvine?
Annual Clockvine 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
Annual Clockvine 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.
Annual Clockvine 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 annua Hochst., family Acanthaceae (first published in Prodr. 11: 55 (1847)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Annual Clockvine, 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: AI-generated illustration (labelled on the image).
- 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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