5 Seeds Cardiospermum halicacabum Balloon Vine Climbing Vine Seeds

Cardiospermum halicacabum, commonly known as Balloon Vine, is a fast-growing climbing vine grown for its distinctive inflated, papery seed pods that appear after small white flowers fade. It is a vigorous tendril climber that quickly covers trellises, fences, and arbors with light green foliage, making it a popular choice for adding height and a touch of curiosity to garden structures.
Often used as an ornamental annual in temperate gardens, Balloon Vine thrives in warm conditions and full sun, producing airy green growth and clusters of balloon-like capsules that mature through late summer and autumn. It suits trellis, pergola, and container culture in warm climates, where its rapid growth can be managed with light pruning to keep it tidy.
Species: Cardiospermum halicacabum
Variety: Balloon Vine
Type: Annual climbing vine in temperate zones; perennial in tropical climates
Plant_Habit: Vigorous tendril-climbing vine
Sun: Full sun to partial shade
Soil: Well-drained, moderately fertile soil
Days_to_Harvest: Not applicable
Zones: 9-11 as perennial; grown as annual elsewhere
Germination: 14-28 days at 65-75F; soak seed 24 hours before sowing
Sowing: Surface sow, lightly cover, keep moist and warm
Spacing: 12-18 inches between plants
Notes: Provide a trellis or support; pinch tips to encourage branching