Growing peonies in U.S. Department of Agricultural hardiness zone 9 is challenging because it is not cold enough to sufficiently chill the plants, which is what induces the blooms, according to Clemson University Cooperative Extension. Gardeners in zone 9 who are determined to grow these large flowered and fragrant beauties should choose tree instead of herbaceous peonies. Tree peonies have larger blooms than their herbaceous relatives and offer a wider choice of flower colors.
The 8-inch coral-pink ruffled blooms of this tree peony lighten around the outer edges as the flowers age. This particular variety will reach its mature height of 4 to 5 feet tall and wide in 10 years. Coral Terrace is hardy in USDA hardiness zones 4 to 9.
The 8-inch, single white fragrant flowers have a slight pink color to them, which quickly fades once they are fully open. The mature height and width of 4 to 5 feet is reached within 8 to 10 years. Phoenix White is a reliable bloomer that is hardy in USDA hardiness zones 4 to 9.
Hibiscus With a Pink Complexion
The sweet fragrance and bright-pink 8-inch double rose-shaped flowers are what make this tree peony stand out. It is an easy, reliable bloomer that reaches a mature height and width of just 4 feet. It is hardy in USDA hardiness zones 4 to 9.
This tree peony with its bright yellow flowers has been around since 1935. The mature size of this tree peony is 30 inches tall by 36 inches wide. The 6- to 7-inch double flowers have a light lemon fragrance. It is hardy in USDA hardiness zones 4 to 9.
The dark magenta red flowers of this variety are close as hybridizers have come to creating a true black peony flower. The plant matures at a height of 4 to 5 feet and a width of 4 feet. The fragrant 8-inch flowers have an anemone shape. The plant is hardy in USDA hardiness zones 4 to 9.
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