Cardiospermum halicacabum A more enchanting plant would be hard to find! This fast-growing, twining vine is the ideal attention-getter for covering an arbor or scrambling up a trellis. Its fine foliage, abundance of minute, white blooms, and fascinating, air-filled balloon seed pods make for a delightful display in the summer garden. Cut the vines to add a romantic filler to fresh arrangements, and check out the seed pods—each holds three seeds marked with a white heart! Vines reach 6–10 feet long. Approximately 13 seeds per gram. Germination code: (1) or (4)