Renanthera coccinea is native to Myanmar, China, Laos, Thailand and Vietnam. In China, they were found in the Kwangtung Province (Guangdong) and on the island of Hainan and Taiwan. On the island of Hainan they grew on the branches of trees or on rocks in rare forests or on their edges, along the ravines, at an altitude of about 1,400 m. In Thailand, they were found in several places in the east and south-east inland and near Ranong on the peninsula Thai. In Vietnam, this species was encountered in the north, along the border with China, near Ha Giang at an altitude of 650-1200 m. It is a giant sized, hot to cool growing monopodial lithophyte in full sun or epiphyte in primary forests, which reaching over 100 cm in size, with a simple to branched, elongate, stout, 100 cm long stem carrying many 2 ranked, thick, fleshy, oblong to shortly lorate, 7-8 cm long and 1.5-3.3 cm wide leaves. The Scarlet Renanthera blooms in the spring on an axillary, lateral, paniculate, 60 to 90 cm long, divaricate, laxly several to many flowered inflorescence. The flowers are deep red in color with yellowish spots on the dorsal leaf, inner whorl petals and lip. Upper sepals straight, oblong, with blunt tip and slightly wavy margins. The lateral sepals at the base are narrow, then expand, forming an almost oval surface with a blunt apex and wavy margins. The oblong petals are arranged horizontally or pointing upward at a slight angle. Their edges are straight, the apex may slightly curl upward. Three-lobed lip with spur is much less than the rest of the flower. The lateral parts of the lip are triangular, the middle part is ovate, its apex is bent back and almost touches the spur.
Epidendrum Renanthera Care
Renanthera Coccinea
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Humidity
High
Lighting
Full Sun
Temperature
19°C - 28°C
Difficulty
Medium
How to Care for the Plant
Water
From late spring until autumn, the precipitation is abundant, but the period of 3-4 winter months is more dry. During active growth, the plants should be constantly moist, but not soaked, and the space around the roots must be perfectly aerated. At the end of autumn, the amount of water should be gradually reduced.
Fertilizer
It is recommended to use 1/4-1/2 dose of fertilizer for orchids during the growing season. You can use high-nitrogen fertilizer from spring to mid-summer, and then high-phosphoric fertilizer until the end of autumn.
Sunlight
Renanthera coccinea needs a light level of 40000-50000 lux. The level of light should be as high as possible, so as not to burn the leaves, but the plants will probably grow better if they are not exposed to the direct effects of the midday sun. Strong air movement should be ensured all the time.
Soil
Due to the length of the shoot and climbing the habit, Renanthera coccinea are best grown in flat containers with good drainage, to which long stakes or moss-covered branches or sticks of tree fern are attached. This cultivation require high humidity and may require several waterings during the day in hot, dry weather. The container should be a flat flowerpot or a basket filled with a very loose, fast-flowing substrate, with good aeration and fast drying after watering. Usually, medium or coarse bark, or chopped woody tree fiber, or cork pieces are used, and various pieces of pearlite and / or chopped sphagnum are added so that the substrate remains loose but retains some of the moisture. The addition of charcoal also increases the permeability of the substrate and prevents its souring in the pot.
Temperature
The average temperature of the summer day is 28 ° C, the night 19-20 ° C, and the daily difference is 8-9 ° C. The average temperature of the winter day is 15-17 ° C, the night 6-8 ° C, and the daily difference 7-9 ° C.
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