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Botanical Name :Hibiscus mutabilis
Species: H. mutabilis
Common Name:: Sthal-Padma (Land-Lotus ),Cotton Rose, Dixie rosemallow
Other Names :Confederate rose or the cotton rosemallow
Habitat :Hibiscus mutabilis is native to E. Asia – China, Japan. It grows in the thickets in S. Japan .Woodland Garden; Sunny Edge; Dappled Shade. It cannot grow in the shade. It prefers moist soil.
Hibiscus mutabilis is a deciduous Shrub growing to 3 m (9ft) by 3 m (9ft). It behaves more like a perennial further north and is frost tender. It is in flower from August to October, and the seeds ripen from September to November. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.
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Flowers can be double or single and are 4 to 6 inches in diameter; they open white or pink, and change to deep red by evening. The ‘Rubra’ variety has red flowers. Single blooming flowers are generally cup-shaped. Bloom season usually lasts from summer through fall. Propagation by cuttings root easiest in early spring, but cuttings can be taken at almost any time. When it does not freeze, the Confederate rose can reach heights of 15 to 18 feet with a woody trunk; however, a much bushier, 5 or 6 feet plant is more typical and provides more flowering. These plants have a very fast growth rate. The Confederate rose was at one time very common in the area of the Confederate States of America, which is how its common name was derived. It grows well in full sun or partial shade, and prefers rich, well-drained soil.
Floral colour change
Flowers are white in the morning, turning pink during noon and red in the evening of the same day. Under laboratory conditions, colour change of petals was slower than that of flowers under outdoor conditions (Wong et al., 2009). Temperature may be an important factor affecting the rate of colour change as white flowers kept in the refrigerator remain white until they are taken out to warm, whereupon they slowly turn pink (Ng, 2006).
The red flowers remain on plants for several days before they abort (Wong et al., 2009). Weight of a single detached flower was 15.6 g when white, 12.7 g when pink and 11.0 g when red. Anthocyanin content of red flowers was 3 times that of pink flowers and 8 times that of white flowers. There was a significant increase in phenolic content with colour change. Overall ranking of AOP of H. mutabilis flowers was red > pink > white.
Subramanian and Nair (1970) postulated that anthocyanins in pink and red flowers of H. mutabilis are synthesized independently since there is no reduction in phenolic content. However, Lowry (1976) suggested that anthocyanins are formed through direct conversion from flavonols as they have structural similarities.
Prefers a well-drained humus rich fertile soil in full sun. Prefers a warm but wet winter. This species is not very hardy in Britain, it is frost-tender and top growth will be killed by even a slight frost. However, the roots are somewhat hardier and the plant can resprout from the base after a few degrees of frost. The plant can probably be grown outdoors in the mildest areas of the country especially if given a good mulch in the winter. It is widely cultivated in tropical and occasionally in temperate areas as an ornamental plant, there are many named varieties.
Seed – sow early spring in a warm greenhouse. Germination is usually fairly rapid. Prick out the seedlings into individual pots when they are large enough to handle. If growing them as annuals, plant them out into their permanent positions in early summer and protect them with a frame or cloche until they are growing away well. If hoping to grow them as perennials, then it is better to grow them on in the greenhouse for their first year and to plant them out in early summer of the following year. Cuttings of half-ripe wood, July/August in a frame. Overwinter them in a warm greenhouse and plant out after the last expected frosts.
Edible Parts: Leaves; Root.
Edible Uses: Rutin.
Leaves. The leaves contain rutin, but the report does not say what quantity. Root – it is edible but very fibrousy. Mucilaginous, without very much flavour.
Antiphlogistic; Demulcent; Depurative; Expectorant; Febrifuge.
The leaves are anodyne, antidotal, demulcent, expectorant and refrigerant. With the flowers, they are applied to burns, swellings and other skin problems. The flowers are antiphlogistic, depurative, febrifuge, pulmonary and stimulant. A decoction is used in the treatment of lung ailments.
Leaves and flowers of H. mutabilis are emollient and cooling, and are used to treat swellings and skin infections (Dasuki, 2001). Mucilage from flowers and leaves is used by midwives to facilitate delivery during labour.
A fibre from the bark is used for making cords and rope.
Disclaimer:The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.