African Jasmine cultivation method
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African Jasmine is easy to adapt to unfamiliar environments and can be planted in courtyards and balconies. It is also known as Grey jasmine, Qinghuang fruit, etc. Its similarity to the Jasmine in the Oleaceae family is only in the opposite leaves and fragrant flowers. Due to the homophony of Grey jasmine and Jasmine, and to make the name sound pleasant and facilitate sales, flower merchants gave it a new name "African Jasmine".
African Jasmine is an evergreen shrub or small tree that can grow up to 5 to 12 meters in gardens, often epiphytic; leaves are opposite, succulent, oblong, elliptical to obovate, 7 to 13 cm long and 3 to 4.5 cm wide, apex acuminate; the upper side is dark green, and the back is yellow-green. The inflorescence is erect and terminal, with 1 to 3 flowers, very short peduncles, white corolla, funnel-shaped, fragrant, with 5 upper lobes, and the whole corolla is like a small trumpet.
African Jasmine enjoys sunlight but its native environment is mostly semi-shaded. In South China, it is planted as a garden green tree, preferably in a place with lateral shading. In the north of the Yangtze River, it is potted, and it can receive full sunlight in spring and autumn, but in summer, it requires shading or moving it to the shade of a large tree to avoid direct sunlight for several hours around noon; it is particularly important to note that in June and July after a long rain followed by a sunny day, the temperature suddenly rises, and the sunlight is very strong, so shading must be done to prevent the tender new shoots and leaves from being sunburned. Public场所's potted plants require ample scattered light or placed near the window, not too dark, otherwise, it will cause the leaves to lose their green color, turn yellow, or fall off.
Whether planted in the ground or in a pot, it requires sufficient water, but the roots should not accumulate water, otherwise it is prone to root rot. In spring and autumn, water to keep the potting soil moist; during the plum rain season, be careful of waterlogging, and in the hot summer, spray water twice a day in the morning and afternoon to increase humidity and reduce temperature; in winter, for indoor potted plants, keep the potting soil slightly moist and spray water on the leaves in the middle and late afternoon when the temperature is relatively higher.
In spring, summer, and autumn, if the lower leaves of potted plants turn yellow and fall off under normal fertilization, it is likely due to waterlogging and root rot, and it is necessary to change the potting soil in time; in summer, if the new tender shoots wither and droop due to insufficient watering, do not immediately pour a lot of water into the potting soil, but first spray some water on the leaves, and after the leaves slightly recover, then pour the right amount of water into the potting soil.
In southern regions, the planting site requires loose, fertile, and well-drained sandy loam soil. In the north, a mixture of 7 parts of decomposed leaf soil, 1 part of river sand, 1 part of decomposed organic fertilizer, and 1 part of fermented sawdust can be used. Loosen the potting soil once a month during the growing season to always keep the roots in a well-ventilated state. Also, change the potting soil every 1 to 2 years for potted plants.
During the growing season, apply a thin solution of decomposed cake fertilizer once a month to potted plants, and apply a phosphorus-potassium fertilizer once before flowering in May to promote blooming; in autumn, supplement with 1 to 2 applications of phosphorus-potassium fertilizer to ensure a safe winter.
In the north, add 0.2% ferrous sulfate to the water when fertilizing during the growing season to prevent leaf yellowing. When planting, apply enough base fertilizer, and in late autumn, apply cake fertilizer around the root system, 0.5 to 1 kilogram per plant.
Disease and Pest Control
1. Diseases
① The (T-J) disease often occurs on young branches and leaves, with nearly circular to irregular sunken spots, brown edges, and gray-white to gray-brown centers, with sparse black dots on them, which are its conidial plates. Control method: At the beginning of the disease, spray 50% carbendazim wettable powder 800 times liquid mixed with 25% thiophanate-methyl wettable powder 800 times liquid, or 25% carbendazim wettable powder 500 times liquid, alternating every 10 days, for 3 to 4 times.
② Sunburn disease occurs in severe summer heat when shading is not adequate, and the tender shoots and young leaves of potted African Jasmine are prone to sunburn, showing gray-white or light white burn spots on the leaves. Control method: Use shade netting to shade and adjust the position appropriately; during high temperature and drought, increase the frequency and amount of watering, and if necessary, water the leaves; for plants that have suffered sunburn, move them to a shaded shed, cut off the burned tender shoots and leaves, and strengthen water and fertilizer management to restore the plant's health as soon as possible.
2. Pest Infestation
African Jasmine occasionally suffers from leaf-eating pests such as short-horned grasshoppers, which cause many holes or notches on the leaves of the plant. It should be sprayed with 90% malathion crystal 800 times liquid to kill them.
The above sharing of the cultivation method of African Jasmine, hoping to bring a little help to your life!