Culture methods of yellow cicada orchid

Air requirement

Yellow cicada orchid likes shade, likes to be moist, and avoids dryness, so it is more suitable to plant in a well-ventilated environment.

Soil requirement

Yellow cicada orchid is suitable for sandy loam with good drainage and rich in humus, such as rotten leaf soil or mountain soil. It can also be used in slightly acidic loose soil or iron-containing soil with a pH value between 5.56.5 and 5.56.5.It is also possible to use loose soil or iron-containing soil.

Temperature requirement

The suitable temperature for growth of yellow cicada orchid is between 15 ℃ and 30 ℃. If the temperature is too low, below 5 ℃, it will affect the growth of yellow cicada orchid, making it in a dormant state, and if it is not transferred in time, frostbite will occur; otherwise, the temperature is too high, above 35 ℃, the yellow cicada orchid will grow poorly, and if coupled with sunlight exposure, there will be leaf burns or scorching within one or two days.

After knowing what kind of air, soil and temperature are most suitable for the cultivation of yellow cicada orchid, let's take a look at what we need to pay attention to when raising yellow cicada orchid.

Yellow cicada orchid Cymbidium iridioides yellow cicada orchid picture guide: yellow cicada orchid how to raise / yellow cicada orchid how to breed yellow cicada orchid business card yellow cicada orchid Cymbidium iridioides yellow cicada orchid culture methods and precautions introduction of yellow cicada orchid, epiphyte. Pseudobulbs elliptic-ovate to narrowly ovate, mostly or completely enclosed in leaf bases. Leaves 4 Mel 8, banded. Racemes with 17 3mi flowers, larger flowers, up to 10 cm in diameter, fragrant, florescence 8-12 months. Morphological characteristics of yellow cicada orchid stem epiphytes; pseudobulbs elliptic-ovate to narrowly ovate, 4mi 11 cm long and 2 mi 5 cm wide, mostly or completely enclosed in the leaf base. Leaves 4 Mel 8, banded, 45 mi 70 (- 90) cm long, (1.6) 2 mi 4 cm wide, apex acute, joint located 15 cm from base 6 mi. Scape piercing through sheath from the base of pseudobulb, suberect or horizontally extending, 40 mi 70 cm or more long; raceme with 3 mi 17 flowers; floral bracts subtriangular, 2 mi 3 mm long; pedicels and ovary 4m long; flowers larger, 10 cm in diameter, fragrant Sepals and petals yellowish green, with 7 pale brown or reddish brown thick veins, lips yellowish and with similar veins on lateral lobes, red spots and patches on middle lobes, folds yellow and chestnut spots in front; sepals narrowly Obovate-oblong, 3.7rel 4.5 cm long, 1.2rel 1.5 cm wide, lateral sepals slightly twisted. Petals narrowly ovate-oblong, 3.5Mel 4.6 cm long and 7Mel 9 mm wide, slightly falcate; labellum subellipsoid, slightly shorter than petals, 3-lobed, base connate with core column up to 4ml 5mm; lateral lobes margin ciliolate, with short hairs above; middle lobe strongly curved, central with 2MUR 3 long hairs, connected to the top of the fold and extending to the upper part of the middle lobe, the rest sparsely short hairy, margin Erose and undulate. Two longitudinal folds on the labial disc extend from the upper to the middle, but quickly become narrow to the base, the tip is thicker, and the middle and upper part has long hairs; the core column is 2.5rel 2.9 cm long, curved forward, with short hairs at the ventral base; pollen clusters are 2, subtriangular. The fruit capsule is subellipsoid, 6 Mel 11 cm long and 3 Mel 4.5 cm wide. The florescence is from August to December. Yellow cicada orchid is distributed in southwest Sichuan, northwest to southeast of Yunnan and southeast of Xizang. Born on trees or rocks in forests or shrubs, also found on rock walls, 900m above sea level. Nepal, Bhutan, India and Myanmar are also distributed. The type specimens were collected from Nepal. How to raise Cymbidium, the breeding methods and matters needing attention of Cymbidium / Cymbidium / cicada orchid

Encyclopedia of knowledge of Cymbidium

Cymbidium, also known as tiger orchid, Simbilan and cicada orchid. It belongs to Orchidaceae and Orchidaceae. Some epiphytic large flower species and artificial hybrids of Cymbidium native to India, Myanmar, Thailand, Vietnam and southern China. Cymbidium is a general term for the varieties of Cymbidium cultivated by artificial hybridization with bright color and large flowers. up to now, there are 20,000 cultivated varieties of Cymbidium. Cymbidium cymbidium has long green leaves, rough flower posture, bold and magnificent, is the world-famous "orchid star". It has the delicate fragrance and elegance of the national orchid and the rich and colorful of the foreign orchid. The Japanese call it "East Aram", and the people in Europe and the United States are also known as "Xinmeiniang Orchid". It is very popular in the international flower market and has become a huge variety group of orchids. Loved by flower lovers. Cymbidium is mainly produced in Japan, South Korea, China, Australia and the United States. At present, the flowers and colors of Cymbidium are white, yellow, green, purple-red or with purple-brown markings. There are the following kinds of cultivated varieties: cut flower varieties: large flowers, flower branches 80-150 cm long. The flowers of Cymbidium are huge, with yellow, white, green, red, pink and complex colors and other colors, bright colors, colorful, neat flowers and strong texture, long-lasting, luxurious and elegant orchids, is a rising star in orchids, the market prospect is bright.

Growth habits of Cymbidium

Temperature: Cymbidium is native to southwest China. Often wild in the semi-shady environment of streams and ditches and under the forest. Like warm winters and cool summers. The suitable temperature for growth is 10-25 ℃. The night temperature is about 10 ℃. The leaves are green, the flower buds grow and develop normally, the flower stems elongate normally and blossom from February to March. If the temperature is lower than 5 ℃, the leaf is yellow, the flower bud does not grow, the florescence is postponed to April to May, and the flower stem does not elongate, which affects the flowering quality. If the temperature is about 15 ℃, the flower bud will suddenly elongate and blossom from January to February, and the flower stem is soft and can not stand upright. For example, the night temperature is as high as 20 ℃, the leaves grow luxuriantly, affect the flowering, and the buds will wither and yellow. In short, the bud formation, stem extraction and flowering of the orchid all require a large temperature difference between day and night.

Water quality: Cymbidium flowers have high requirements for water quality, like slightly acidic water, and are sensitive to calcium and magnesium ions in the water. Rain Water watering is the most ideal. Higher air humidity is needed during the growing period. For example, the humidity is too low, the plant growth is poor, the root growth is slow and small, the leaf becomes thick and narrow, and the leaf color is yellow. Generally speaking, Cymbidium is afraid of dry but not wet.

Light is an important factor affecting the growth and flowering of Cymbidium. Cymbidium belongs to the light-loving class in Orchidaceae. Sufficient light is beneficial to leaf production, flowering stem and flowering. Too much shade, leaves slender and thin, can not be upright, false bulbs become smaller, easy to get sick, affecting flowering. Shading 50% to 60% in midsummer, and more sunshine in autumn, which is conducive to flower bud formation and differentiation. On rainy and snowy days in winter, if auxiliary light is added, it is very beneficial to flowering.

Key points of maintenance of Cymbidium

Selection of cultivation substrate and pot

It is appropriate to choose a long barrel-shaped basin with porous bottom and four walls, and the cultivation substrate should choose bark blocks or fern roots with good air permeability and water permeability, and charcoal, ceramsite and other things should be added in the lower part of the basin to facilitate drainage.

Fertilization and watering

It is not suitable to water immediately after ramet planting. If it is found to be dry, water can be sprayed on the leaf surface and basin surface to prevent the leaves from drying up, falling off and pseudo-bulbs from shrinking. Wait for new buds and roots to grow before they can be watered. Watering in cultivation should depend on the weather and vibration. It depends on the wet and dry conditions. The ministry should be provided with sufficient water during the vigorous growth period and watered in time in the dry and hot seasons. When the temperature is low in winter, the watering times can be reduced. The pH for watering should be 6. 5. Cymbidium prefers fertilizer. After sprouting in spring, compound fertilizer with a concentration of 0.1% Mel 0.2% nitrogen fertilizer should be applied once a week. Or rotten thin cake fat and water. In the bud period, the available phosphorus and potassium fertilizer should be applied in advance.

Lighting and ventilation

Avoid direct sunlight, need sufficient scattered light, shade about 50% under strong summer light. There is a little more sunshine in autumn-it is beneficial to flower bud formation and overwintering. In winter, it can be placed in the greenhouse where the sunshine is strong and the temperature is high in the south of China, so it should be cultivated in the shade all the year round. In order to facilitate ventilation, overhead placement should not be too dense.

Temperature and humidity

The suitable growth temperature is 25 ℃: in daytime and 10 ℃ at night. If the temperature is higher than 20 ℃ at night, it will wither the buds or affect flowering. The winter temperature should not be lower than 5 ℃, but not higher than 15 °C, otherwise the flower bud will suddenly elongate. In addition, in summer and dry climate, we should often spray water to the leaves and the ground and shelves. At the same time, attention should be paid to the prevention and control of various diseases and insect pests.

Control of Diseases and insect pests of Cymbidium

Fungal anthracnose

Mostly occurs at the top of the leaf, the spot edge is dark brown, the middle gray, mostly caused by high temperature, high humidity, poor ventilation, disease spot should be cut off in time, and cooperate with spraying. Common medicament has 1000 times mancozeb, 1000 times can be killed.

The following fungicides are commonly used to control other fungal diseases: 1000-fold chlorothalonil, 800-fold pyrethromycete, 800-fold metalaxyl.

Bacterial disease

The commonly used agents are 6000-fold agricultural streptomycin sulfate, 300ppm agricultural streptomycin and 800x Jinggangmycin. During continuous cropping and long-term cultivation, soft rot will occur seriously. In the seedling stage, the disease will not occur, generally to the third year, when the flower bud reaches the height of 20 to 30 centimeters, it is found that the corms will suddenly rot, which will also occur in the mountains. At this time, it can only be destroyed, otherwise it is easy to spread the disease to healthy plants. If the surrounding environmental hygiene and drug control are carried out in time, the disease will be inhibited.

Insect pest

The main pests are slugs, spider mites, commonly used pesticides: slug nemesis (trapping), trichloroinsecticidal mites. When there is poor ventilation from June to September, slugs occur seriously, mostly hidden in the back of leaves, and harm the root system at the same time. Lime can be sprinkled in the cracks in bricks, and then water can be sprayed to kill a large number of adults. At the same time, longevity flowers and leaves and granule nemesis can be used to trap and kill. Leaf mites occur on the back of the leaves, so medication should start from the back of the leaves.

The yellow leaf scorched edge phenomenon of Cymbidium has the following situations:

Improper watering

Although Cymbidium likes to be wet, because of its strong moisturizing ability of potted medium and fleshy root system, it is suggested that it should not be watered too often, but should be watered with clear water close to room temperature, and should not be irrigated during flowering period. Fertilizer will be applied after flowering, otherwise the flowering period will be shortened and fertilizer damage will occur if the fertilizer is used improperly. Can be controlled according to the room temperature watering interval days, watering should be slowly and slowly, do not pour.

Improper transplantation

The big flower cymbidium and other flowers sold on the market are all replaced with more beautiful and noble porcelain pots, but in the process of changing the pots, because the flowerpots are larger, some businessmen add some flower soil to the pots, but some of the flower soil is not mature. To be changed to the pot after the sale of organic fermentation to release heat, the damage to flowers. The root system is burned and rotten, resulting in yellow leaves or death of the plant. It is suggested that the soil of flower pots should be examined carefully to ensure that the flowers grow healthily.

Cold air damage

Although Cymbidium is more hardy, it is unbearable at lower temperature. May be hit by cold air on the way home, causing damage to leaves or flowers. It didn't show up at that time, and it wasn't until a few days later that the symptoms slowly appeared. This type of injured flowers can only cut off the yellowing leaves, slowly recuperate, but generally will not die.

Small environment discomfort

Cymbidium is a kind of flower that likes high air humidity. If the indoor air humidity is low and the temperature is on the high side, the yellow leaf scorched edge phenomenon is easy to occur. You can spray water several times a day to increase the humidity of the small environment. In addition, there may be air conditioning blowing directly or close to the heating and other prone to dry small environment, but also extremely prone to coke edge yellow leaves. When this phenomenon occurs, you only need to adjust it. But the leaves are yellow and can only be cut off.

The light is too poor.

Cymbidium likes light but is afraid of strong light, generally, scattered light is better, too weak light will also cause some diseases of its poor growth, generally indoor appreciation is based on indoor location to determine the location of flowers, but at this time we should also pay attention to whether flowers adapt to the small environment of this location.

Flowering maintenance of Cymbidium

The optimum temperature during flowering was 8 ℃ to 15 ℃, which could not be placed next to the high temperature and dry radiator. The low temperature flowers with a long time of 2 ℃ to 3 ℃ were watered once every 3 days. The bud turned yellow and could not open. If the room temperature is too high, higher than 18 ℃, the bud is easy to yellowing and falling off, and the whole flowering period is shortened.

How to carry out restorative maintenance after the orchid flower

When 70% of the flowers wither, the flowers should be cut off from the base as soon as possible to reduce the unnecessary nutrient consumption in the plant. Try to remove the potted orchid plant from the narrow plastic basin, be careful not to hard damage the root system, remove the old plant material from the peach root, cut off the rotten roots and dead leaves, and plant it in a thousand-barrel pot that is slightly larger and deeper than the original pot and has many drainage holes at the bottom. The plant material can be mixed with water moss, bark, vermiculite, rotten leaf soil, peat soil and so on, and the bottom can be covered with 3 cm thick brick or bark. Under general family conditions, the plant material can be mixed with the proportion of bark block, rotten leaf soil and vermiculite 1 / 3 each, with 3% retted cake fertilizer powder or a small amount of multi-component slow-release compound fertilizer particles, and the pH value is controlled between 5.5 and 6. During the growing season, pay attention to keep the cultivation substrate moist and often spray water on the leaf surface and the surrounding environment. From April to October, thin liquid fertilizer is applied every semimonthly, thin cake fertilizer can be considered for family cultivation from April to August, 0.2% urea plus 0.1% potassium dihydrogen phosphate mixture can be used, and 0.2% potassium dihydrogen phosphate plus 0.1% urea mixture can be used from September to October. The over-summer management of Cymbidium is very important. It should be placed in a humid environment of no more than 35 ℃ during the day and shaded by 40% to 50%. If shaded by 90%, it is difficult to form flower buds. It is best to maintain the ambient temperature below 25 ℃ at night, and if possible, it can be placed in the air-conditioning room, which is conducive to the smooth completion of flower bud differentiation. Its flower bud differentiation usually occurs around June, and the uppermost leaf (also known as stop leaf) of the new seedling which shows vigorous growth in plant morphology has not yet fully developed, and when the third to fourth leaf is completed, flower buds are formed at the base of the pseudobulb. In order to better promote the plant to form flower buds, 10 to 14 days of "water deduction" (drought treatment) should be given during this period, but it should not cause damage to the plant. When the flower bud differentiation of Cymbidium is completed, it is necessary to create a moist, cool, semi-shady and well-ventilated environment in July, August and September. In order to prevent mistakes caused by improper fertilization, fertilization should be suspended when the ambient temperature is more than 32 ℃ and return to normal fertilization after the weather turns cool. Fertilization should be stopped when the winter temperature is lower than 12 ℃. The overwintering temperature should be maintained from 8 ℃ to 10 ℃. For family potted Cymbidium, self-made granular fertilizer can be used, such as mixing bone powder or superphosphate with retted cake fertilizer and rubbing pond mud to make fertilizer pills with a diameter of 2 cm to dry, which can be buried in the plant material regularly and released slowly with watering and Rain Water infiltration to meet the needs of plant growth.