A Detailed Guide to the Cultivation Techniques and Propagation Methods of Camellia azalea
Camellia azalea, also called azalea camellia, or "false big-head camellia", belongs to the genus Camellia and is an evergreen small tree. It gets its name because its appearance closely resembles an azalea, while it is in fact a camellia. Camellia azalea is an extremely rare camellia species, currently found in the world only in the E'huangzhang Provincial Nature Reserve in Yangchun County, Guangdong Province. Ordinary camellias have both the proud character of plum blossoms and the gorgeousness of peonies, and since ancient times they have been a highly renowned woody flowering plant, enjoying the fine name of "world-famous flower". Yet the beauty of Camellia azalea surpasses that of ordinary camellias.
The leaves of Camellia azalea are long obovate, thick, leathery, with a glossy green surface; the leaf margins are smooth. The leaves are semi-erect on the branches, almost in a whorled arrangement, resembling the leaves of an azalea tree. The tree has a low crown shape, smooth branches, red young shoots, and dense, compact branches and leaves. The flowers of Camellia azalea, like those of the azalea, have 5 petals, and the shape of the spread petals also closely resembles that of an azalea flower, but the flower form is larger than that of an azalea. The candle-shaped flower buds are terminal or axillary, the buds are very large, the flower color is bright red, the petals are narrow and long, the filaments are white, the anthers are golden yellow, and the flower diameter is over 10 cm. Although the flowers are single-petaled, they are densely borne and full in overall appearance, blooming continuously through all four seasons; even in winter, the tree remains full of red flowers. Here is a brief introduction to the cultivation management and propagation methods of Camellia azalea.
Cultivation Management
Site selection and land preparation. Choose a warm, humid environment with good drainage and loose, fertile sandy loam, loess, or humus soil. A pH value of 5.5-6.5 is optimal. When preparing the land, plow deeply, apply sufficient base fertilizer, and make high beds about 120 cm wide.
Potting method. Use light loam soil, namely furnace ash slag, alum fertilizer water, and three-mix soil. Place a 3 cm thick layer of fine furnace ash slag at the bottom of the pot, then add an appropriate amount of potting soil, accounting for 1/3 of the pot volume, add plenty of water, and after the water seeps through, plant the camellia seedling with its soil into the pot. Generally, change the potting soil once a year.
Field management. After the cuttings of Camellia azalea are taken, keep the soil moist and apply topdressing in time, but do not over-fertilize. During management, water the flowers alternately with fertilizer water, starting in spring and gradually increasing the frequency, then reducing from August and stopping in September. The principle of watering is to alternate between dry and wet. Pruning should not be too heavy; simply cut off some diseased, weak branches and overly dense branches. Camellia azalea is a multi-flowered tree species, so buds should be thinned appropriately when budding.
Propagation Methods
The propagation methods of Camellia azalea include sowing, cutting, layering, and grafting. In actual production, the cutting method is mostly used. In addition, in landscaping, as an ornamental flower, large-flowered camellias and wild camellia seedlings can be used for approach grafting, for a small amount of single-plant propagation.
Camellia azalea combines excellent characteristics such as a long flowering period, brilliant flower color, tolerance to high temperatures, strong stress resistance, and unique leaf shape, giving it extremely high ornamental value and therefore also high development value. The survival rate of grafted Camellia azalea has reached 90%, and the survival rate of branch cuttings can also reach 40%.