Balloon vine (Cardiospermum grandiflorum)
Care, watering, light and tips for Balloon vine on Floravia.
Quick facts
- Family: Sapindaceae
- Difficulty: Easy to care for
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Balloon vine
Cardiospermum grandiflorum, commonly known as balloon vine or heartseed vine, is a vigorous perennial tropical climber, often grown as an annual in temperate climates. It is distinguished by its characteristic inflated, heart-shaped, pale green capsules that turn brown upon maturity, and its discreet white flowers. It is ideal for covering pergolas, fences, or trellises, providing an exotic touch and interesting visual texture.
Native range
Tropical and subtropical Africa, and parts of Central and South America
Care tips
It requires full sun exposure for optimal flowering and fruiting, although it tolerates light partial shade. Watering should be regular during the growing season, keeping the substrate moist but not waterlogged, and reduced in winter. It prefers fertile, well-drained soils rich in organic matter. A common mistake is not providing adequate support for climbing, which can limit its development and flowering.
How to save a dying Balloon vine
- Warning signs
- Yellowish or brown leaves, limp or dry stems, lack of flowering or fruit.
- First aid
- Check watering and sun exposure. If potted, consider repotting in well-draining soil. Prune dry stems.
- What kills it
- Overwatering causing root rot, or insufficient direct sunlight. Also very poor soils.
- Can it be saved?
- Yes, if roots are not completely rotted and the problem is corrected promptly. It's a resilient plant.