Scientific name: Clerodendrum speciosissimum
Family Genus: Verbenaceae
Origin: Native to tropical West Africa.
Morphological characteristics:
The Red Dragon Turtle is a climbing evergreen shrub. Leaves opposite, ovate, apex pointed, entire, lateral veins conspicuous. Flowers evacuated into clusters, terminal or axillary. The flower bud turns white and turns pink, forming a pentagonal shape with a narrowed top. The petals are red, the stamens are long and protrude from the corolla.
Biological characteristics:
Hi warm, moist and sunny environment, not cold.
The optimal temperature for growth is 18-24°C, 18-30°C for February-October, and 13-16°C for October-February. The temperature in winter is not lower than 8°C, and stems and leaves above 5°C are vulnerable to freezing injury. Light leaves cause fallen leaves, while heavy leaves are shriveled.
The temperature during the vegetative growth period can be relatively high, and the temperature above 30°C can be maintained with normal water supply. The reproductive growth, the flowering temperature should be lower, about 17 °C.
Red dragon vomiting beads are sensitive to the response to moisture. During the growing period of the stems and leaves to keep the salt and soil moist, but the water can not be excessive, the water is too large, resulting in only a long vine without flowering, even the leaves yellow, withered, the roots rot to death. Water should be fully watered during the summer hot season, with proper shade. In winter, it is necessary to reduce watering and make it dormancy in order to ensure safe wintering.
In winter, it is necessary to have sufficient light. When the weather is too hot in summer, it should be shaded, otherwise the leaves will turn yellow. When there is insufficient light, it will cause vine growth and will not bloom. Flower bud differentiation was not affected by the photoperiod, but strong light had a positive effect on flower bud differentiation and development. It should not be placed in the dark for too long. If the temperature exceeds 21°C for more than 24 hours, it will fall.
Soil is fertile, loose and well drained sandy loam. For potted plants, mixed soil of cultivated soil or peat soil and coarse sand is used.
Use characteristics:
Honglong Tuzhu was introduced to the United Kingdom in 1790. It was mainly used for greenhouse cultivation and was widely cultivated in European botanical gardens.
At present, Europe and the United States use dragons to spit pearls for ornamental viewing, embellishing ledges and summer gardens. So far, the Yag Nursery in Israel and the Oswald Plant Company in Australia have begun industrial production to supply the international market.
The history of cultivation in our country is not long. The early 20th century in the south of Guangzhou. Cities such as Xiamen are cultivated. After the founding of New China, botanical gardens were introduced as greenhouses. At present, mass production is already taking place in cities such as Shenzhen, Guangzhou, and Zhuhai, and potted dragon-toed pearls can be seen everywhere in the flower market.
The red dragon bead is one type of dragon spit bead, and the dragon spit bead is also known as pearl poinsettia, which is a genus of genus Verbena. Long Tuo Xia Autumn Festival, the top of the white flower bud spit a bright red corolla, red and white inlaid, shaped like a swimming dragon spit beads, unusual beauty, common potted flowers.
Variety:
Its cultivar, Variegatum, has dark green leaves with irregular white markings.
The common genus of ornamental species is C.fallax, with a plant height of 60 cm and a bright red flower.
Ghost lantern (C.fortunatum), white flower, black fruit.
C.foxii, dark green leaves, bright red flowers.
C. fragrans, dwarf, pink, double petals.
Pseudojasmine (C.inerme), shrubs, creeping, white flowers.
C. japonicum, shrubs, leaves heart-shaped, bright red flowers, fruit blue-black.
C. myricoides, shrubs, flowers blue-purple.
C. speciosum, flower red, sepals pale pink, style white.
Beautiful C. splendens, bright red flowers.
C.wallichii, evergreen shrub, dark green leaves, inflorescences, red sepals, white flowers.
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