Blue Sky Vine
Thunbergia grandiflora
Climbing Plants Difficulty: Moderate
📖 About this plant
A vigorous twining vine prized for its stunning sky-blue, trumpet-shaped flowers that bloom profusely from summer through fall. Each flower can reach 8 cm across, creating a spectacular display against its dark green, heart-shaped foliage. Ideal for covering trellises, fences, and pergolas quickly.
🧑🌾 Care requirements
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Light
Full sun (6-8 hrs)
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Water
Every 2-3 days
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Humidity
Moderate (50-65%)
🌡️
Temperature
18-32°C
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Soil
Well-draining, fertile loam with organic matter; pH 6.0-7.5
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Fertilizer
Balanced liquid fertilizer (10-10-10) every 2 weeks during growing season
📋 Plant facts
- 🌍 Origin
- India, China, Southeast Asia
- 📏 Max height
- 300-600 cm
- 📐 Spread
- 100-300 cm
- 🕰️ Bloom time
- Summer - Fall
- 🎨 Bloom color
- Blue, Purple
- 🍃 Foliage color
- Green
- ⏳ Lifespan
- Perennial
- 📈 Growth rate
- Fast
- ☠️ Toxicity
- Non-toxic to pets and humans
- 🌱 Propagation
- Softwood cuttings in spring, semi-hardwood cuttings in summer, or seed sowing indoors
🛡️ Health & Safety
🐾 Pet safe
✅ Non-toxic
Non-toxic to pets and humans
Common issues
- Can become invasive in tropical climates, Powdery mildew in humid conditions, Root rot in poorly drained soil
💡 Care tips
- Stunning sky-blue flowers resembling morning glories,More shrub-like than most vines forming a dense screen,Twining stems need a sturdy support structure to climb,Blooms profusely from midsummer through fall
🪴 Add to My Plants
One click — added instantly. Watering every 3 days, fertilizing every 14 days.
