These plants are not to be confused with tropical hibiscus that only last for one season in gardens above Zone 9 in the southeast. Perennial hibiscus consistently return year after year and produce an abundance of huge flowers all summer long that are 8 to 12 inches in diameter! The flowers come in color shades of red, pink, lavender, and white. These beauties are perfect near the garden pond, hot tub or swimming pool, however we use them in other situations as well. Most varieties grow about 4 feet high by 4 feet wide in size with the exceptions of 'Swamp Hibiscus' and 'Confederate Rose' that grow over 6 feet in height and spread.