Traditional Culture Encyclopedia - Hotel accommodation - How to manage and maintain potted gardenias in northern China? 0? three
How to manage and maintain potted gardenias in northern China? 0? three
In southern China, the unique warm and humid climate and slightly acidic soil and water are easy to grow gardenias. For northerners, gardenia needs careful care. If you are not careful, you will be sallow and emaciated, rarely bloom, but the fragrance will disappear. After several years' exploration, the author found that potted gardenias have been developing vigorously every year in recent years, and mainly did the following: 1 Select suitable potted soil. Gardenia is a kind of acid-loving flower, and the suitable p H value is 5 to 6. If the soil acidity is not suitable, it will get twice the result with half the effort in future management. The cultivation soil can be humus soil, peat soil or sawdust made of half garden soil, without using old wall soil and cinder. It is more convenient and practical to use the soil of Clivia on the market. 2 scientific watering. Gardenia likes moist soil and high air humidity. Keep the basin soil moist during the growth period from April to September. When the soil surface is dry, water it, and spray water on the leaves with a watering can at night. If it withers after drying, it is not good for growth. It grows too vigorously, and the internodes are long. Don't water it at night, and then water it when the sun comes out in the morning. In the northern alkaline water area, tap water should be put for two days before use. Every three to five days, use the 0. Each liter contains 5g citric acid and 1g ferrous sulfate. 3. Rational fertilization. Gardenia likes to be fat. 3% decomposed cake fertilizer can be added to the culture soil as base fertilizer. In the growing season, the alum fertilizer water made of cake fertilizer and ferrous sulfate retting is poured once a week, or 0. 1% humic acid total nutrient organic liquid fertilizer can be used. 0 is being inverted. Spraying 1% potassium dihydrogen phosphate aqueous solution once or twice in bud stage can make the flowers plump and fragrant. When the temperature is above 3 5℃ in summer and below 65438 0.5℃ in autumn, fertilization will be stopped. 4 Get more sunshine. Gardenia likes light and can grow in the shade for a long time, but the flowers are longer and less. In addition to the strong light at noon in July and August and the winter dormancy period, it is generally necessary to maintain it in the sun to flourish. 5 winter dormancy is good. Gardenia can overwinter in the open air in the Qinling Mountains of China, but the root system of potted Gardenia will be damaged after severe winter, and the recovery will be slow in spring. Overwintering indoors with heating is not freezing, but insufficient light and thin growth. Most of the buds formed in autumn will fall off and bloom later the next year. A better way is to put potted flowers in a cold room at about 5℃ to make them dormant, or to wrap flowerpots with thermal insulation materials such as foam plastics to protect their roots and put them in the leeward and sunny places for the winter, so that they can recover quickly in spring and bloom early. 6 change the soil in time. Small seedlings are potted in small pots and gradually replaced by large pots. When the crown width is 2 to 3 times the diameter of the basin, it is time to change the basin. The growing season can be changed at any time. After the pot is inverted, the soil lump should be planted in a new pot about 5 cm larger than the diameter of the original pot. When the pot is about 2 8 cm long, the pot is generally not changed, only the soil is changed. It is better to change the soil in March in spring. After watering the pot, cut off part of the old roots, shake off half of the old soil, plant new soil in the pot, water it, put it in a warm and semi-shady place, and keep it in the sun when the new buds sprout. 7. Trim properly. Gardenia grandiflora seedlings were cut off at the trunk of 2 0 cm, leaving 3 ~ 4 branches. When two pairs of leaves branch, cut them off to promote branching, and they can grow freely in the future. Gardenia doesn't need topping. After flowering every year, gently cut off the inner branches and weak branches, and some branches are short and short. When the crown width of gardenia grandiflora is too large after 4 ~ 5 years, it can be pruned strongly after flowering. Generally, two pairs of leaves are cut off from the upper branches, and the inward buds and the buds at the lower part of the trunk are wiped off after budding, so that the plant shape will become more compact and beautiful. 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