Camellia usually needs to be watered with neutral or acidic surface water. When watering, it should be dry and wet. Water it thoroughly when it is dry, but be careful not to be too dry. Generally, water should be stopped at the end of spring shoots before germination to facilitate the transformation to reproductive growth, and water should not be stopped before flowering. Hualu town

But it should be noted that if you grow up in a general living room, you will die easily. Ordinary fertilization can be -30cm pot) 10g/ pot; Compound fertilizer 2g/ pot; You can also use 0. 1% urea and 0. 1% potassium dihydrogen phosphate once every 10-20 days, and the above fertilizers are used alternately. If the new shoots are yellow due to iron deficiency, 0.2% ferrous sulfate can be applied once a week until they recover. Apply 0.2% ferrous sulfate every 15-30 days to prevent yellowing and root rot in the north. Jinhua Camellia is so beautiful. The "Laofeng Tea Garden" in Jinhua City, Zhejiang Province has won many gold medals in the Camellia Congress, which has been well received by the international Camellia Association, the domestic Camellia Association and the industry. Dr. Davis Parks of the United States and Professor Sakata of Japan visited Laofeng Tea Garden, China Camellia Culture Park and International Camellia Species Park. Dr. Davis Parks and his family have made great achievements in the study of camellia. His father is a professor of tea science and a doctoral supervisor. Camellia named after him has been planted in Laofeng Tea Garden. In Laofeng Tea Garden, Dr. Parks saw that the camellia cultivated by his father would bloom so beautifully, with a fragrance of Jinhua, and among more than 400 varieties of camellia in Laofeng Tea Garden, the flower is the largest. Dr Parks gave a thumbs-up and, in the blunt words of China, said, "It's amazing". He also said: "Jinhua Camellia is so beautiful." He must take a photo with Lao Feng as a souvenir and bring it to his father who can't come because of physical reasons. Lao Feng's family loves Camellia and knows a little about Camellia. Everyone knows that Jinhua has a camellia fan-Lao Feng. Ms Michael Downer, former president of the International Camellia Association, and Ms Mao Fei, Secretary General of the International Camellia Association, have all visited Laofeng Tea Garden. Now Laofeng Tea Garden covers an area of nearly 30 mu, and there are four or five hundred varieties of camellia. Laofeng Tea Garden has always been famous for grafting. In addition to the well-known excellent varieties such as eighteen arhats and golden camellia, many excellent and unique varieties have been cultivated.

breeding method

There are many ways of propagation of camellia, including sexual propagation and asexual propagation, among which cutting and docking are the most common. 1, the cutting method is the simplest, and the cutting time is the most suitable in September, and spring is also ok. Selecte well-grown semi-lignified branches, remove that basal leaves, keeping the upper three leaves, cut into oblique mouth with a sharp knife, immediately soaking the incision with 200-500ppm of indolebutyric acid for 5-65438 05 minutes, drying in the sun, inserting into a sand basin or vermiculite basin, watering for about 40 days after insertion, and healing the wound and rooting for about 60 days. The cuttings treated with hormone took root 2-3 months earlier than those without hormone treatment. Using vermiculite as an insert bed can take root much faster than sand bed. 2, docking camellia

Choose suitable varieties, such as small grain tea or camellia oleifera, as rootstocks, relying on precious camellia. Docking time is usually between Tomb-Sweeping Day and Mid-Autumn Festival. First of all, plant the rootstock in a flowerpot, cut off about half of the parts to be combined with a knife, and the incision should be smooth. Then, the cut surfaces on both sides are closely attached together, wrapped in plastic film, and the rootstock is watered twice a day, and it will heal after 60 days. You can cut it and plant it in the shade to avoid direct sunlight. In February of the following year, cut off the tail of the rhizome with a knife and plant it. 3. Leaf-cutting method Camellia usually adopts branch cutting propagation method, but some rare varieties can also adopt leaf-cutting method because of the limitation of branch source or considering that the tree shape will be affected after the materials are taken. Mountain mud is used as cutting matrix, and 1/3 river sand can be added to facilitate ventilation and drainage. Put the substrate into a clay pot and then can it. In rainy season, annual leaves can be used as cutting materials, which are too old to take root, too tender and easy to rot. Insert the soil about 2 cm deep, compact the soil after insertion, pour enough water, and then put it in a cool and ventilated place. Generally, the roots can grow in 3 months, and the branches can grow in the next spring. 4. The biggest feature of high-altitude cutting method is that it can attach all the weak branches on camellia that should be trimmed with new life. This method has the advantages of high survival rate, rapid rejuvenation and early flowering. The method is as follows: girdling the twigs to be pruned at a proper position (generally, the upper part can be reserved with branches of 15-25 cm), the girdling length can be between 5-8 mm, a plastic film with a proper size is tied, sterilized peat soil or humus soil is added into the film, and after 7- 18,

1. It is best to plant in the north of the Yangtze River in spring and in the south of the Yangtze River in autumn. Ground planting should be selected with good drainage and strong water retention performance. Sandy loam rich in humus. Pot culture is made of humus soil, sandy soil and manure with 65,438+0/3 each, or mixed culture soil with 4 humus soil, 5 peat soil and 65,438+0 coarse sand. The pH value is 5-6.5. The planting place should be where there is no water and no sun exposure. Potted camellias should be placed in a ventilated and light-transmitting place in winter and in a shade shed or other cool places in summer. Camellia should avoid moving its position randomly, otherwise it will be bad for its growth. Chidan

2. Camellia guangwenensis is a long-day plant. Flower buds can only be formed in the environment of day length 12 hours. The optimum growth temperature is 18- 25℃, and the optimum flowering temperature is 10-20℃. Above 35℃, the leaves will be burnt. It is not cold-tolerant. It should be indoors in winter, and the temperature should be kept at 3 ~ 5℃. It can tolerate the low temperature of-10℃ for a short time, but it cannot exceed 16℃ for a long time, otherwise it will promote germination and cause defoliation. The growing season should be placed in a semi-shady environment, and it is not suitable to accept too strong direct sunlight. Especially in summer and autumn, it should be shaded or placed in a cool place under a tree. 3. Water fertilization Camellia requires high fertilizer and water, and neutral and alkaline loam is not conducive to its growth. In the north, it is particularly important to pay attention to acidifying alkaline water before watering flowers. The specific method is to store the rice washing water for 2 days to volatilize the chlorine in the water, and then add an appropriate amount of ferrous sulfate (about 0.5% of the water). Don't water too much, or the roots will rot easily. Pot soil can't be dry, otherwise the roots will shrink due to water loss, so it is advisable to keep the pot soil and surrounding environment moist. Don't spray water during flowering. It is best to apply thin alum fertilizer and water to avoid applying thick fertilizer. Generally, after germination in spring, dilute fertilizer water is applied 65,438+0 times every 65,438+07 days, phosphorus and potassium fertilizer are applied in summer, and fertilizer can be stopped for about 65,438+0 months in early autumn, then alum fertilizer water is applied before flowering, and quick-acting phosphorus and potassium fertilizer is applied when flowering, so that the flowers are bright in color and have a long flowering period. 4. Prune the camellia planted on the ground, mainly by cutting dry dead branches, weak branches, cross branches and over-dense branches, which obviously affects the branches of the tree and sparse redundant buds. Besides the above work, potted camellia should be pruned according to personal preference, but it is not suitable for re-pruning because of its weak growth potential. 5. Flowering control Because camellia is not cold-tolerant, delayed flowering is not commonly used. Generally, the flowering period is controlled by variety selection, temperature control and hormone treatment. In order to make camellia blossom in 1 1 month, we can dip 0. 1% gibberellin in the bud with a brush in mid-July or early August, and apply it 1 time every three days to achieve normal fertilizer and water management. It depends on the growth of flower buds in September to decide whether to draw flowers. If it is estimated that "Eleventh" flowering is unsafe, we can increase the number of flower coating, increase the amount of fertilizer and water, promote the rapid growth of flower buds, and make "Eleventh" blossom.