Exotic Organic Farm
Coimbatore, India
A rare Himalayan-foothill climber with long, hanging chains of orange-to-scarlet tubular flowers. A showpiece for pergolas, arbours and verandas.
Rare exotic climberA rare, premium climber for pergolas, arbours and special gardens.
Sold by a Coimbatore farmExotic Organic Farm, Kuppanur, Coimbatore.
Suited to Indian climateCare notes written for Indian heat, monsoon and soil.
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Thunbergia coccinea, the scarlet clock vine, is native to the Himalayan foothills and hills of North-East India, from Kumaun through Nepal and Bhutan to Assam, and across Bangladesh, Myanmar and south-west China, at roughly 300–2,000 m. It belongs to the Acanthaceae family, which also includes the other clock vines. Its flowers hang in long chains of bright orange to scarlet tubular blooms with a yellow throat, about 5–6 cm long, set against large, velvety, toothed leaves. The colour depends on the temperature: flowers are more orange in warm weather and a deeper red in cooler conditions.
It is a vigorous, woody, twining climber that can reach several metres, so it needs a sturdy pergola, arbour or trellis where the flower chains can hang freely and be admired from below. It is uncommon in cultivation, which makes it a prized plant for collectors. It likes warmth and humidity and is sensitive to cold, so it suits most of peninsular India, with some protection from the harshest midday sun.
| Botanical name | Thunbergia coccinea (also listed as Hexacentris coccinea) |
| Common names | Scarlet clock vine, scarlet thunbergia, red clock vine |
| Family | Acanthaceae |
| Native to | Himalayan foothills and North-East India, Nepal, Bhutan, Bangladesh, Myanmar, south-west China |
| Plant type | Woody, twining climber |
| Mature size | Several metres; needs a strong support |
| Flowering in India | Winter to spring, roughly January to April |
| Flower | Hanging chains of orange to scarlet tubular flowers with a yellow throat, 5–6 cm |
| Light | Full sun to bright light; shade from fierce midday sun |
| Water | Regular; moist, well-drained soil |
| Climate | Warm and humid; sensitive to cold |
| Difficulty | Moderate |
Written for India's heat, monsoon and soil. These are general guidelines; adjust to your city, soil and season, and message us if you want advice for your location.
Give it full sun to bright light. In very hot places, a little shade from the fiercest midday sun keeps the leaves and flowers from scorching.
Water regularly so the soil stays moist but never soggy, and ease off a little in cooler months. It does not tolerate waterlogging.
Use fertile, well-drained soil with plenty of compost, in a large pot or a deep planting pit.
Feed every 3–4 weeks in the growing season with a balanced fertiliser, and add compost each year.
Train it up a strong pergola, arbour or trellis, so the flower chains hang down where you can see them from below.
Trim lightly after flowering to keep it tidy and encourage fresh growth. Avoid hard pruning just before the flowering season.
In India the scarlet clock vine usually flowers from winter to spring, roughly January to April, with some variation by region and weather. The chains of flowers hang for weeks, and the colour is more orange in warm weather and deeper red in cooler conditions. Young vines need to establish before they flower well. Sun, regular feeding and a strong support to hang from give the best display.
Scarlet Clock Vine · view 1
Scarlet Clock Vine · view 2
Scarlet Clock Vine · view 3
Scarlet Clock Vine · view 4Usually from winter to spring, roughly January to April, with some variation by region and weather.
The colour depends on temperature: flowers tend to be more orange in warm weather and a deeper scarlet red in cooler conditions.
Yes. It is native to the Himalayan foothills and hills of North-East India, as well as Nepal, Bhutan, Bangladesh, Myanmar and south-west China.
It is a vigorous climber that can reach several metres, so it needs a strong pergola, arbour or trellis with plenty of room.
A young plant can start in a large container with a sturdy trellis, but it does best in the ground or a very large pot with a strong support.
Full sun to bright light, with a little shade from the fiercest midday sun in very hot places.
The Scarlet Clock Vine (Thunbergia coccinea) is priced at Rs 4,500 per live plant at Exotic Organic Farm. Message us on WhatsApp to confirm current availability and plant size.
Live plants are packed carefully and shipped from our Coimbatore farm. Message us your pin code on WhatsApp and we will confirm the plant size, packing and delivery time for your location.
Looking for the scarlet clock vine price in India, where to buy Thunbergia coccinea online, or scarlet clock vine care tips? This page covers all three. The scarlet clock vine is one of the rare exotic vine plants for sale in India at exoticfarm.in, from Exotic Organic Farm in Coimbatore, with delivery to Chennai, Bengaluru, Kerala and the rest of India (message us to confirm for your pin code).
₹4,500 · Rare vine
₹5,000 · Rare vine
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