Water and fertilizer management

At the end of autumn, when the weather turns cool and the flowers enter the later stage of growth, the application of nitrogen fertilizer should be controlled, and more phosphorus and potassium fertilizer, Magnesium Boron zinc iron micro fertilizer, root promoting agent, etc. should be applied. At the same time, control the watering amount, promote the growth and enrichment of plants and enhance their cold resistance. After entering the dormancy period in winter, the middle ploughing and fertilization shall be carried out once, mainly by applying stable manure, manure and cake fertilizer, so as to improve the concentration of soil solution and further enhance the cold resistance of open field flowers

Cover overwintering

Some perennial flowers and grass flowers growing in the open field in the courtyard, such as peony, Canna, dahlia and tulip, are prone to freezing or cold damage in the north of Huaihe River

Generally, before the cold current comes, the ground around the flower rhizosphere is covered with leaves, wheat straw, straw or plastic film to keep warm, warm and antifreeze. Remove these covers after the late frost at the end of April the next year

Cultivating soil and blocking roots

When winter comes, all the aboveground parts are dormant, but the roots are still growing slowly, such as peony, hydrangea, hibiscus, osmanthus, rose, etc. The roots of these flowers should be covered with soil around the roots. When the plants begin to germinate in spring, the soil should be removed and watered and fertilized

Wrapping insulation material

For some large ornamental flowers and trees, which cannot be buried or covered due to their large size, they can be protected against cold by wrapping fine straw rope, wrapping grass, wrapping paper and covering plastic film; For some flowers and trees with strong cold resistance and fear of cold wind or just planted, the method of setting up wind barriers can be adopted, that is, set up wind barriers with reed mats, tree sticks, corn straw and other materials on the West and north sides of the flowers and trees. For example, cedar and cypress planted and bred in the north of Huaihe River can be used to prevent cold< span>