How can we cultivate good southern flowers? The key is to understand the natural climate of their place of origin and to grasp the ecological habits of each flower. Specifically speaking, it is necessary to focus on four major links: soil for cultivation, water, shading, humidification, and insulation and cold protection.
1. Make the soil acidic Most of the southern flowers are hi acidic soils, especially the strong acid soils such as camellia and rhododendron. If long-term use of such soils containing too high alkaline to cultivate such flowers will cause the leaves to dry, yellow or even die, so that the soil is acidic, is an important measure to maintain a good southern flower. Felt leaf soil, pine needle soil, peat soil or ferrous sulfate, sulfur powder, vinegar residue can be used to improve the soil, all have better results.
2. Improve water quality The saline water content in groundwater is high in most areas in the North. Long-term use of this type of watering can easily alkalinize soil salinity and affect the normal growth and development of southern flowers. Therefore, it is best to use waterless flowers without minerals. Rain or snow water.
3. Shading and humidification in North China and other places are hot in summer and the sunshine intensity is high. At this time, if the potted flowers are exposed to strong light, it is easy to cause yellow foliage and even burns. Therefore, proper shade is needed in summer. The origins of flowers such as rhododendrons and gardenias not only have more rainfall, but also have more rainy weather. As a result, the sky often has a lot of clouds and fog, making the light intensity weaker. In North China and other places, although there is a lot of rain in the summer, it is mostly sunny after the rain, so the light intensity is higher. Most of the flowers imported from the South cannot adapt to this strong light environment. Therefore, in the northern summer, different shades will be given to these southern plants. This is another important measure for raising southern flowers.
Most southern flowers prefer a humid environment. However, the climate in the north is dry and the relative humidity of the air is low, which may cause the tips of the leaves to dry or drop buds and fall. Therefore, it is necessary to spray the leaves with fresh water during the whole year of conservation, and even to the flower pots in summer. Spray water around the ground to increase air humidity. This will not only help increase the luster of leaves and air humidity, improve the efficiency of photosynthesis, but also reduce the occurrence and spread of pests and diseases, and is therefore an indispensable part of the cultivation of southern flowers.
4. Insulation cold South flowers mostly like warmth, fear of cold. Low temperature below 0°C during the growth period is likely to be affected, so after the late autumn, the temperature should be changed according to the requirements of each flower, and timely moved into the indoor conservation. Generally, it is advisable for the flowers to enter the room before the frost fall. The level of winter room temperature should be treated differently depending on the temperature of the different flowers. For Hi-temperature Milan, Poinsettia, Sinningia, He's Impatiens, bamboo begonias, cactus flowers, etc., should not be less than 12 °C; hi medium temperature of white orchids, jasmine, Fusang not less than 5 °C; Low-temperature sweet-scented osmanthus, kumquat, generations, etc. can be safely overwintering at no less than 0°C. Most flowers in the South have poor cold resistance, so do not leave the room prematurely in the spring to avoid damage from late frost and cold wind.
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