Kiwis are fast-growing vines with beautiful foliage and edible kiwi fruits. Most varieties of kiwi vines enjoy warmer climates, but can withstand winter temperatures down to about 10 degrees Fahrenheit. Some "hardy" kiwi varieties can endure even colder temperatures, down to -25 degrees or colder. Kiwi vines usually take two to five years to begin bearing fruit, and the vines can grow 30 feet long or more. A single kiwi vine can produce up to 25 pounds of kiwi fruits, making a sturdy support vital to growing the kiwi vines properly.