Hibiscus moscheutos, the rose mallow, swamp rose-mallow,[2]crimsoneyed rosemallow,[3] or eastern rosemallow,[1] is a species of flowering plant in the family Malvaceae. It is a cold-hardy perennial wetland plant that can grow in large colonies. The hirsute leaves are of variable morphology, but are commonly deltoidal in shape with up to three lobes.[4] It is found in wetlands and along the riverine systems of the eastern United States from Texas to the Atlantic states, its territory extending northward to southern Ontario.[5]
Numerous forms exist in nature. It is a tall plant, with a height of 1.5–2.5 metres (4.9–8.2 ft) and flowers up to 20 centimetres (7.9 in) across.[6] Petal colors range from pure white through various pinks to deep red,[7] and most have an eye of deep maroon.[4] Taxonomic consensus is lacking for the nomenclature of the multiple subspecies. The flowers are borne apically, whereas the related Hibiscus laevis carries bud and bloom along the stem.
The edible parts of the plant include its leaf buds and young leaves, flowers, immature seed pods (which can be prepared as okra), seeds, and roots.[9][10]
The leaves and roots are known to contain mucilage. Tea from boiled leaves has been used to relieve cough, sore throat, and digestive inflammation. These medicinal attributes of the tea have been used to treat dysentery, lung ailments, and urinary infections. An infusion of dried stalks has been used to treat bladder infections. Hibiscus moscheutos flowers have also been used externally to reduce swelling and pain from bruises and insect stings.[10]
Cultivation
This is a popular garden plant. It can be propagated by seed, or by crown divisions during winter dormancy, and some success can be achieved by hard-wood stem cuttings. Numerous hybrids of the native North American Hibiscus species have been released by the commercial nursery trade. In cultivation the species or the hybrids can be used in bog gardens or other water features. They are attractive and have wildlife value for nectar-feeders and birds.
Cultivars
Corolla
Many cold-hardy hibiscus cultivars are hybrids of H. moscheutos, H. coccineus, H. laevis, H. militaris, H. grandiflorus, H. dasycalyx, H. mutabilis. With indeterminate genetic contributions from each parent species.[11] Hibiscus breeders do not preclude the possibility of self-pollination. However, recent research has shown that artificial pollination just after the flower has opened using a high pollen load will ensure that most of the resulting seeds are from the selected pollen parent. Early hibiscus breeders were likely aware of this and used it to their advantage.[12]
^Snow, A. A., et al. (2000). Effects of sequential pollination on the success of "fast" and "slow" pollen donors in Hibiscus moscheutos (Malvaceae). American Journal of Botany 87(11) 1656-59.
