Cypress vine (Ipomoea quamoclit), a flowering vine also known as star glory, produces star-shaped flowers in shades of pink, white or red, and thin, thread-like foliage. Native to tropical America, cypress vine requires warm weather to thrive, though gardeners around the world cultivate the plant as an annual during the summer months. Cypress vine's fast growth, attractive form and minimal care requirements have made it a favorite in the United States. Reaching up to 15 feet in a single season, the vine provides summer cover for fences and trellises, and attracts butterflies and hummingbirds to the garden.
Plant cypress vine during early spring after all threat of frost has passed. Choose an area that receives full sun and consists of moist, well-drained soil. Spread a 2-inch layer of compost over the site and work it in with a garden tiller to improve the fertility of poor soils.
Dig a hole in the soil of equal depth and 1 to 2 inches wider than the plant's root ball. Insert the roots into the hole, backfill with soil and water lightly. Space cypress vines 3 to 6 feet apart to accommodate their mature size.
Install a support structure near the cypress vine such as a trellis, fence or stake. Secure the vine to the structure loosely with twine when it grows large enough. Remove the twine once the vine has a secure grip on the structure.
Water cypress vine once every seven to 10 days to keep the soil moist, but not wet. Soak the soil to a depth of about 4 inches at each application. Never allow standing water to accumulate or the plant will die. Cypess vine cannot tolerate wet feet.
Feed the plant once per month during spring and summer using a 5-10-5 NPK fertilizer to provide the required nutrition for rapid growth and flowering. Apply according to the manufacturer's directions for the best results.
Remove spent cypress vine flowers whenever possible throughout the blooming season to encourage additional blossoms. Remove any damaged or diseased vines as needed, which promotes new growth and improves the plant's appearance.