Cypripedium macranthos is native to China, Japan and Russia. The range covers a wide area from the European territory and Asian Russia to the east through Siberia up to the Kamchatka peninsula...
Cypripedium macranthos also called as The Large Flowered Cypripedium, Cypripedium calceolus var. rubrum, Cypripedium macranthos f. albiflorum, Cypripedium macranthos f. rebunense, Cypripedium macranthos nothof. alboroseum, Cypripedium macranthos nothof. albostriatum, Cypripedium macranthos nothof. flavoroseum, Cypripedium macranthos var. albiflorum, Cypripedium macranthos var. atropurpureum, Cypripedium macranthos var. flavum, Cypripedium macranthos var. maximum, Cypripedium macranthos var. speciosum, Cypripedium neoparviflorum, Cypripedium speciosum, Cypripedium speciosum var. albiflorum, Cypripedium thunbergii, Cypripedium thunbergii f. albiflorum, Cypripedium ventricosum, Sacodon macranthon, Sacodon ventricosum, is a species of the genus Cypripedium. This species was described by Olof Peter Swartz in 1800.
IDENTIFY CYPRIPEDIUM MACRANTHOS
Cypripedium macranthos is native to China, Japan and Russia. The range covers a wide area from the European territory and Asian Russia to the east through Siberia up to the Kamchatka peninsula, further south along the coasts of eastern Siberia, through Korea and north-east China and the islands of Japan. The occurrence of this orchid was observed even in Taiwan. It usually grows in light shade, in swamps, in bushes and in forests, and on slopes and on river banks, at altitudes from sea level to around 2400 m. In China, they grow in humus-rich soil with good drainage, in forests or on shady slopes, at heights ranging from 500-2400 m, in the north-eastern provinces of Heilongjiang, Jilin, Liaoning, Nei Mongol, Hebei, Shandong, and Taiwan.
It is a medium sized, cold growing terrestrial, which reaching 50 cm in height, with a leaf, 25-50 cm long stem carrying 3 to 6, oblong, alternate, plicate, 10-15 cm long and 5-8 cm wide leaves.
The Large Flowered Cypripedium blooms in the late spring and early summer on a terminal, erect, 1 to 2 flowered inflorescence with large leaflike bracts. The flowers are 7.5 cm in diameter. They can be purple, red or pink, often with darker veins, especially on the petals of both whorls. Clones with white flowers are known, but they are rare.
CYPRIPEDIUM MACRANTHOS CARE AND CULTURE
Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.
Light:
Cypripedium macranthos needs a light level of 30000-40000 lux. The light should be filtered or scattered, and the plants should never be exposed to the direct sunlight of the midday sun. You need to ensure constant, strong air movement.
Temperature:
The average temperature of the summer day is 21-22 ° C, the night 8-13 ° C, and the daily amplitude 9-13 ° C. The average temperature of the winter day is -13 to -7 ° C, night -21 to -26 ° C, and the daily difference is 12-14 ° C. If we have a cool humidifier, plants grown in pots will grow well close to the outlet of cool, humid air.
Humidity:
In the summer and early autumn, The Large Flowered Cypripedium needs the humidity of 70-80%, and in winter and spring it drops to 50-60%.
Substrate, growing media and repotting:
Cypripedium macranthos are probably the easiest to grow in relatively large pots. The substrate recommended is made of 2 parts of clay garden soil, 2 parts of thick leaf mulch, 1 part of sand and 1 part of cut sphagnum. Such a substrate can be used for plants grown in pots and plants grown in the ground, e.g. in a rock garden. To ensure good drainage, the plants should be repotted every spring when new roots begin to grow.
Watering:
In the summer and early spring the rainfall is moderate, but their average drops quickly in mid-autumn, when the dry season comes, which lasts almost until the end of the next spring. The cultivated plants should be watered abundantly during growth, but when new growths end in the autumn, the amount of water should be reduced.
Fertilizer:
Weekly use 1/4-1/2 of the recommended dose of fertilizer for orchids. You can use sustainable fertilizer throughout the year, but you can also use high-nitrogen fertilizer from spring to mid-summer, and then use high-phosphoric fertilizer until the end of autumn.
Rest period:
If Cypripedium macranthos are grown in the ground, a thick layer of isolation of fallen leaves and similar mulch should be provided in autumn. When grown in pots, the plants can never dry up completely, and the temperature should be kept around 5 ° C, but it can never fall below 0 ° C.
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