Potted flowers in dormant state can not be topdressed in winter. Plants belonging to this category include pomegranate, bell-bell, sea bream, hibiscus, cactus, bulbous sea bream, hydrangea, medlar, sea bream, white orchid, milan, pearl, hazelnut, rose, peony, peony, iron tree, pine and cypress. . However, these potted flowers must be changed in the winter or in the spring, and the base fertilizer should be applied at one time to facilitate the growth or flowering in the coming year.
  In the winter, the potted compound fertilizer and ferrous sulfate can be applied. Plants belonging to this category include monstera, spring feather, variable leaf wood, peach leaf coral, Wenzhu, Umbrella, Hydrangea, and spider eggs. Because the right amount of nitrogen and iron can make the potted leaves rich and green and apply a small amount of potassium to improve the cold resistance of the plants. The method of fertilizing is to embed a small amount of granular fertilizer in the potting soil; or to pour the liquid fertilizer into the soil once a month or so.
  In the winter, it is advisable to increase the application of phosphorus and potassium fertilizer. Plants belonging to this category include cyclamen, poinsettia, geranium, camellia, camellia, plum, wax plum, iron stalk, sea urchin and the like. It is enough phosphorus nutrients to make the flower buds large (colorful or floral, while maintaining a certain amount of potassium is beneficial to improve the cold resistance of potted plants. This potted flower can be applied with solid phosphorus and potassium fertilizer can also be applied 2% ~3% of liquid fertilizer such as potassium dihydrogen phosphate, etc. The time of fertilization is preferably during the growth period of the flower buds, and the flower buds are opened every two weeks
  Phosphate fertilizer should be added in the winter of potted fruit cultivation. Plants belonging to this category include alfalfa, kumquat, golden bean, bergamot, firethorn, and bamboo. The result of the plant consumes a large amount of phosphorus nutrients, so that it can continue to bloom in the coming year. It is necessary to add a sufficient amount of phosphorus in winter. The method is to apply a certain amount of solid heavy superphosphate from the circumference of the flower pot. More, otherwise it will burn the roots, which is counterproductive.
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