USDA Zones: 5 - 11
Height: 120 inches
Bloom Season: Mid summer to mid fall
Bloom Color: Green to red
Environment: Full sun
Soil Type: Moist, but well drained soils, pH 6.1 - 7.8
Temperature: 65 - 70F
Average Germ Time: 14 - 21 days
Light Required: Yes
Depth: Plant seed 1/4 inch deep
Sowing Rate: 1 - 2 seeds per plant
Moisture: Keep seeds moist until germination
Plant Spacing: 6 inches
Care & Maintenance: Cardiospermum
Balloon Vine (Cardiospermum Halicacabum) - Start Balloon Vine seeds for this fun-to-grow tender perennial vine. Cardiospermum Halicacabum Balloon Vine is a woody climbing plant with tendrils that grab structures like a trellis or fence, and the vine produces small white flowers which after time forms the large ornamental seed pods that resemble balloons.
The flower seed gives the plant another one of its common names, Heartseed Vine. Another common name for Cardiospermum is Love in a Puff Vine.
Flower seed | balloon vine
Cardiospermum vine can climb up to 10 feet in no time forming its remarkable inflated seed pods. The seed pods change color over time from green to red as the plant matures. The Cardiospermum seeds are very unique with a hard shell of dark brown to black, and each seed has a perfect cream colored heart. Indoors, grow in loam-based potting compost (No. 3) in bright filtered light. In the growing season, water freely and apply a liquid fertilizer monthly; keep just moist in winter. Pot on our top-dress in spring. Outdoors, grow in fertile, moist but well-drained soil in full sun. Provide support. In early spring, thin out congested growth of plants grown as perennials.
- Height: 120 inches (vining)
- USDA Zones: 5 - 11
- Season: Annual
- Attracts bees
- Deer Resistant: Yes
How to Grow
Start Balloon Vine seeds directly outdoors in a prepared site. Cardiospermum seeds need to be covered with 1/4 inch of soil and kept moist until germination. Give the Balloon Vine plant a structure to climb as it grows quickly. Cardiospermum vine can grow as a perennial in frost free zones.
- Sowing Rate: 1 - 2 seeds per plant
- Average Germ Time: 14 - 21 days
- Keep moist until germination
- Depth: 1/4 inch