Tropical Hibiscus Flowers
Hibiscus are tropical plants that can't tolerate freezes. However, for those of you who live in areas with just a few really cold nights (below 32F), it may be possible to keep your hibiscus in the ground year round if the plants are covered during the coldest nights. In cold areas (USDA zone 4-9), you can grown Hardy Hibiscus.
Most pictures in this page belong to Mr. Richard Johnson of the International Hibiscus Society and Dr. Kim Bridges of the University of Hawaii.
Click thumbnail to see larger pictures.