How long is the cycle of potted azaleas?

Brief introduction of flower varieties

Rhododendron: the name of the family Rhododendron.

Rhododendron Rhododendron & Latin &; Rhododendron (Rhododendron-Rhododendron pentaphyllum, Rhododendron Titsushi subgenus). The English name is Sims Rhododendron, and the Japanese name is Indian Rhododendron. China flowering plants and western flowering plants: Eukaryote: Plant phylum: Angiosperms: Dicotyledonous plants: Ericaceae: Ericaceae: Rhododendron species: Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron. It is a small shrub of Ericaceae, evergreen and deciduous. Rhododendrons are distributed in temperate regions of the northern hemisphere. Among more than 900 species in the world, there are nearly 600 species in China, so rhododendron is recommended by some lovers as one of the candidate flowers in China. Colorful azaleas arouse people's warmth and beautiful feelings for life, and also symbolize the prosperity of the country and the happy life of the people. This is the true meaning of our people's love for cuckoo. Nepal, a famous mountain country in South Asia, regards rhododendron as the national flower. There is a flower on the national emblem of Nepal.

Rhododendron bonsai album (20 photos) Red azaleas are in full bloom. At the same time, China and Guangxi Liuzhou also designated rhododendron as the city flower. The azaleas are very beautiful. Tubular flowers have many colors, such as crimson, reddish, rose, purple and white. When azaleas are in full bloom in spring, the mountains are full of bright colors, like rosy clouds surrounding the forest, which is known as "the beauty in flowers". Rhododendron usually has five petals, with some red dots slightly redder than the petals in the middle. Rhododendron has a strong vitality, which is resistant to both drought and humidity, and can adapt to sunlight and shade. The roots are shallow and widely distributed, and can be fixed on the surface soil. The most powerful thing is that it is not afraid of polluted air in the city, because it is covered with furry leaves, which can not only adjust moisture, but also absorb dust. It is most suitable for planting in a metropolis with many people, cars and air pollution, and can play a role in calming the air. It usually blooms in spring and autumn. The representative species of rhododendron is commonly known as "Rhododendron". Almost all the provinces in the Yangtze River basin, even in the sparse forests or bushes in mountainous and hilly areas such as Yunnan and Taiwan Province. Funnel-shaped flowers with sour petals can be eaten as fruit, but you can't eat too much at a time, otherwise you will have nosebleeds. Note: the plants and flowers of Rhododendron flavum contain toxins, which will cause poisoning after eating by mistake; The flowers of Rhododendron leucocephala contain tetracyclic diterpenoids, which cause vomiting, dyspnea and numbness of limbs after poisoning.

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Deciduous shrub, about 2 meters high; Branches, bracts, flower stalks and flowers have brown flat coarseness. The leaves are papery, ovoid, 2-6 cm long, 1-3 cm wide, sharp, wedge-shaped at the base, rough hairs on both sides and dense back. 2-6 flowers clustered on the branches; Calyx 5-lobed, lobes elliptic-ovate, 2-4 mm long; Corolla is bright red or crimson, wide funnel-shaped, 4-5 cm long, 5 lobes, with crimson spots on the inner surface of upper 1-3 lobes; Stamens 7- 10, hairs below the middle of filaments, and purple anthers; Ovary and style are strigose near the base, and the stigma is capitate. Capsule ovoid, about 65438 0 cm long, strigose. The flowering period is from April to May, and the fruit maturity is 65438+ 10. It is an indicator plant of acidic soil. The leaves contain flavonoids (azalea), triterpenes and ursolic acid.

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Born on hillsides and hills. Widely distributed in the provinces of the Yangtze River basin, east to Taiwan Province Province, southwest to Sichuan and Yunnan; Macheng, Hubei Province has the largest ancient rhododendron community in China, which has been approved by Guinness Headquarters. Widely distributed in Changbai Mountain, Daxing 'anling and Xiaoxing 'anling areas. World distribution: There are about 960 species of rhododendron in the world, 850 species in Asia, 24 species in North America, 9 species in Europe, 560 species in Australia/kloc-0 and China, accounting for 59% of the world's species. China Hengduan Mountain and Himalayan region are one of the modern distribution centers of rhododendrons in the world.

Edit the growing environment of this part.

Rhododendron likes acidic soil, but it does not grow well or even does not grow in calcareous soil. Therefore, soil scientists often regard rhododendron as an indicator crop of acidic soil. Rhododendron has been cultivated for many years, and a large number of cultivated varieties have appeared, with many colors and diverse shapes, including single petals and double petals. Rhododendron likes a cool, humid and ventilated semi-cool environment, which is afraid of extreme heat and cold. The suitable growth temperature is 65438 02℃ to 25℃. When the temperature exceeds 35℃ in summer, the new shoots and leaves grow slowly and are in a semi-dormant state. Sun protection is required in summer, and attention should be paid to keeping warm and cold in winter. Avoid exposure to the scorching sun. Suitable for growth in scattered light with low light intensity. If the light is too strong, the young leaves will be easily burned and the new leaves will be burnt.

Will cause plants to die. Cold-proof measures should be taken when planting rhododendron in the open field in winter to ensure its safe overwintering. Among the ornamental rhododendrons, Rhododendron occidentalis has the weakest cold resistance, and freezing injury is easy to occur when the temperature drops below 0℃.

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azalea

1. Cutting method: This method is the most widely used and has the advantages of simple operation, high survival rate, rapid growth and stable characters. ① Time: West Rhododendron from late May to early June, Mao Dujuan in early and middle June, and Spring Rhododendron and Summer Rhododendron in middle and late June. At this time, the branches are old and tender, and the climate is warm and humid. (2) Cutting, that is, taking the newly lignified branches of that year, breaking them with the heels, smoothing the hairy heads, cutting off the lower leaves, keeping the upper 3-5 leaves, and keeping them moist for cutting; ③ Cutting management: Cutting substrate can be orchid soil, mountain humus soil, yellow core soil, vermiculite, etc. The cutting depth should be 1/3 to 1/2 of the ear length. After cutting, water should be sprayed, plastic film should be covered with moisture, and proper shading should be given. The cutting substrate should always be moist within one month, so that Mao Juan, Chunjuan and Xia Juan can take root in about one month. 2. Grafting: A rootstock can be grafted with multiple ears, with many varieties, fast growth, good plant type and high survival rate. ① Time: from May to June, twig splitting method or abdominal transplantation method was used; ② Rootstock: 2-year-old Mao Juan was selected, and the thickness of new branches and scions was appropriate. Mao Juan "Jade Butterfly" and "Purple Butterfly" are better rootstocks. (3) scion: on the mother plant in Xi Juan, cut off the tender branches with the length of 3 cm to 4 cm, remove the lower leaves, keep 3 to 4 leaflets at the end, and cut the base into a wedge shape with a blade, with the section length of about 0.5 cm to 1.0 cm. 5. Grafting management: cut off the new shoots of Mao Juan at 2 cm to 3 cm, remove the leaves at this position, longitudinally cut 1 cm, insert the wedge-shaped end of the scion, align with the cortex, bind the joint with plastic film tape, and tie the mouth with plastic bags to keep moisture; Put it under a shade shed to avoid direct sunlight and exposure. After 7 days, as long as there are small drops of water in the bag and the scion does not wilt, it is possible to survive; Unpack the package after 2 months, and unpack the binding tape in the spring of the following year.

Edit the planting method of this paragraph.

1. The plants north of the Yangtze River are potted for viewing. Potted soil consists of humus soil, sandy soil and the same soil (7:2: 1) mixed into cake fertilizer, manure and so on. , stir well and plant. Generally, change pots or soil in March in spring. The area south of the Yangtze River is mainly planted in the ground, which should be planted before germination in spring. The place should be in a ventilated and semi-cool place. The soil should be loose and fertile, rich in humus, and acidic sandy loam is suitable, and it is not suitable for water accumulation, otherwise it is not conducive to the normal growth of rhododendrons. After planting, be sure to water it. 2. Light and temperature should be moved out of the greenhouse in the middle and late April, and placed in the leeward and sunny place first, which is cool in summer, or in the shade under the tree to avoid direct sunlight. The suitable growth temperature is 15 -25℃, and the highest temperature is 32℃. From mid-June, autumn, 10 is moved indoors, and it is placed in a sunny place in winter. The room temperature is kept at 5-10℃, and the lowest temperature cannot be lower than 5℃, otherwise it will stop growing. 3. After watering and fertilizing, planting and changing soil, watering 1 time, so that the root system can fully contact with the soil, which is beneficial to the survival and growth of the root system. Pay attention to watering during the growth period, and gradually increase the amount of watering from March, especially in summer, always keep the basin soil moist, but don't accumulate water. Reduce watering after September, and then water after entering the house in winter. Rational fertilization is the key to raising rhododendron, and it is preferable to fertilizer. During the spring and autumn growing season, 10 times liquid water of pancake fertilizer should be applied every 1 0 day, which can be fermented with rice washing water, peel and vegetable leaves. In autumn, you can supplement some phosphorus and potassium fertilizers, and you can use fish and chicken viscera and meat washing water, rice washing water and some peels. In addition to the homemade household fertilizers mentioned above, you can also buy some household fertilizers to use, but remember to apply them "thinly". Apply dry fertilizer 1 time (small amount) before winter, and don't apply base fertilizer when changing pots. In addition, when watering or fertilizing water, tap water should not be used directly, but should be acidified (adding ferrous sulfate or vinegar) and then used when the pH value reaches about 6. 4. Pick flower buds in time when shaping and pruning, so as to concentrate the supply of nutrients and promote the bright colors of flowers. Pruning branches is usually carried out in spring and autumn. Cut off cross branches, over-dense branches, overlapping branches and weak branches, and remove residual flowers in time. Plastic surgery is generally a natural tree, with a little artificial modification, which is arbitrary because of the tree shape. 5. Control of Flowering Period If you want to see flowers during the Spring Festival, you can move potted flowers to the sunny place at 20℃ in a warm room on June+10 in 5438 or 20 days before the Spring Festival. Other management is normal, and flowers can be seen during the Spring Festival. If you want to see the flowers in May 1 day, you can move the flowerpot indoors below 5℃ for cold storage before germination in early spring, move it to the sunny place in the greenhouse at 20℃ in April 10, and move it out on April 20th, so you can see the flowers on May 1 day. Therefore, the temperature can adjust the flowering period, and it will open at four o'clock as you like. In addition, the plants cut immediately after flowering can bloom in late June at 65438+ 10; If pruned in the peak season, the flowering period can be delayed by about 40 days; If pruning is combined with cutting, the flowering period can be postponed to February of the following year. Therefore, pruning in different periods also affects flowering time.