Flower summer and autumn winter fertilization essentials

    　 First, summer: the summer temperature is higher, most flowers grow poorly. Flowers that are not resistant to high temperatures, such as dwarf red, petunia, gerberas, and kaffir, grow extremely slowly in summer when the temperature is high, and the fertilizer requirements are not high. At this time, the fertilization should be stopped, such as good cooling conditions, flowers can Fertilize during normal growth. Due to the high temperature in summer, the flowers in the semi-dormant state such as the rose, cyclamen, etc. should stop fertilizing, and then start fertilizing after the temperature drops and resume growth; for some high temperature resistant flowers such as zinnia, periwinkle, cockscomb, Gladiolus, sunflower, etc., summer is the peak season for their growth and flowering, fertilizer should be used normally, but due to the high temperature during the day in summer, fertilization should be selected in the morning or evening, the concentration of fertilization should also be controlled to prevent root burning. Immediately after fertilization, rinse the leaves of the flowers with water to prevent the oil from splashing on the leaves. The aquatic flowers such as water lilies and bowls can be fertilized normally in summer. The fertilized fertilizer can be buried in the root soil without burning roots. The phenomenon of burning leaves.
2. Autumn: Nitrogen is an essential element for flower growth. Application of nitrogen fertilizer can promote the growth of branches and leaves. However, for flowers that are dormant in winter, the application of a large amount of nitrogen fertilizer in autumn will induce the occurrence of autumn shoots. The occurrence of autumn shoots will not only consume the nutrients stored in the flower body, but also the flowering and flowering of the spring flowers will be affected in the second year, and the flower dormancy time will be postponed after the autumn shoots, and the freezing damage will occur when the temperature is low. Applying phosphorus and potassium fertilizer to flowers that are dormant in winter, phosphorus and potassium fertilizer can promote the accumulation of nutrients in flowers, laying a foundation for growth and flowering in the second year. However, it is not possible to apply nitrogen fertilizer in autumn, and nitrogen fertilizer can still be applied to flowers that do not sleep in winter. In particular, foliage plants should still be applied with fertilizers based on nitrogen fertilizer. However, when applying nitrogen fertilizer, attention should be paid to the combination with phosphorus and potassium fertilizer. Reasonable application of phosphorus and potassium fertilizer can improve the cold resistance of flowers: winter flowering plants such as cineraria, pudding, cyclamen, poinsettia, and plum are in the vegetative growth period in early autumn, and fertilizers based on nitrogen fertilizer should be applied. During the pregnancy buds, phosphorus and potassium fertilizers should be used for fertilizing such flowers, supplemented by nitrogen fertilizer, and excessive nitrogen fertilizer is not conducive to winter flowering.

Third, winter: when the winter temperature is low, it is not suitable for the growth of most flowers. Indoor flowers that do not sleep in winter, such as evergreen flowers, tigertail orchid, fishtail, brown bamboo, and green radish. There is basically no requirement for fertilizer at room temperature around 5 °C, so no top dressing is required. If the temperature is low, fertilization is prone to root rot. The main reason is that the root growth is in a slow state, and the applied fertilizer cannot be absorbed by the root system, but it will hinder the normal absorption of the root, and in the case of severe, it will rot. However, some flowers can grow well when the temperature is low in winter. For example, flower cabbage, cold water, sea bream, etc., nitrogen, phosphorus and potassium can be used with nitrogen fertilizer as the main fertilizer, but the dosage should be properly controlled.

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