The hard seed coat restrains germination of balloon vine (Cardiospermum halicacabum L.). In order toincrease the rate of germination, ten different seed treatments were tested. The seeds soaked in 95% sulfuricacid for 12 hours or abraded before sowing had 85%-90% of germination. No germination was recorded inthe seeds soaked in hydrogen peroxide, sodium hypochlorite, and hot or cold tap water. Number of pinchingaffected the growth of potted plants. Three times of bud-pinching during the vegetative period significantlyreduced plant height, increased the numbers of lateral tendrils and fruits, and thus improved the esthetic valueof balloon vine potted plants.