What fertilizer is best for azaleas? Fertilizer selection and application methods
What fertilizer is best for azaleas? Please give guidance. Azaleas are fertilizer-loving plants. In addition to the main nutrients nitrogen, phosphorus and potassium, they also need trace elements such as boron, copper, molybdenum and zinc. For azaleas, fertilizers with mild strength and long-lasting effect are suitable. For home azalea growing, ox horn, ram horn and animal hoof pieces can be used; these fertilizers contain 12%-15% nitrogen and 0.2%-8% phosphorus, and also contain a small amount of potassium and trace elements. Thin hoof pieces take effect 1 month after application, while thick hoof and horn pieces show fertilizer effect after 2 months, and the fertility can last 6-8 months. When using them, they can be buried at the edge or bottom of the pot along with repotting or changing pots. Cake fertilizer is also a relatively complete fertilizer in terms of nutrition. The nutrients in cake fertilizer generally contain 2.1%-7.6% nitrogen, 0.54%-3.3% phosphorus and 0.5%-2.7% potassium. Generally speaking, soybean cake and peanut cake contain more nitrogen, while rapeseed cake and cottonseed cake contain more phosphorus. They must be fully fermented before application. Fertilizer made by composting livestock manure and tree leaves can be mixed into the growing medium when repotting.
What fertilizer is best for azaleas? Please give guidance
Azaleas are fertilizer-loving plants. In addition to the main nutrients nitrogen, phosphorus and potassium, they also need trace elements such as boron, copper, molybdenum and zinc. For azaleas, fertilizers with mild strength and long-lasting effect are suitable. For home azalea growing, ox horn, ram horn and animal hoof pieces can be used; these fertilizers contain 12%-15% nitrogen and 0.2%-8% phosphorus, and also contain a small amount of potassium and trace elements. Thin hoof pieces take effect 1 month after application, while thick hoof and horn pieces show fertilizer effect after 2 months, and the fertility can last 6-8 months. When using them, they can be buried at the edge or bottom of the pot along with repotting or changing pots. Cake fertilizer is also a relatively complete fertilizer in terms of nutrition. The nutrients in cake fertilizer generally contain 2.1%-7.6% nitrogen, 0.54%-3.3% phosphorus and 0.5%-2.7% potassium. Generally speaking, soybean cake and peanut cake contain more nitrogen, while rapeseed cake and cottonseed cake contain more phosphorus. They must be fully fermented before application. Fertilizer made by composting livestock manure and tree leaves can be mixed into the growing medium when repotting.
Different azalea varieties also differ in their fertilizer requirements. Among the azalea varieties in Dandong, Sihai Bo, Shuanghua Hong and Hama Mudan should be fertilized less; Xiannu Wu, Wubao Zhu and Fugui Ji are relatively tolerant of fertilizer; Da Ye Azalea and others are even more tolerant of fertilizer.
Azalea fertilization should follow the principle of light and frequent application. Fertilization is generally carried out during the vigorous growth periods in spring and autumn, and generally no fertilizer is applied in winter. For flowering plants, apply hoof pieces or manure once when repotting in March or April in spring, apply soybean cake or hoof and horn fertilizer water 1-2 times in May and June, and during the rainy season the fermented cake fertilizer powder can be sprinkled on the pot surface and mixed evenly with the topsoil. In autumn, apply a relatively concentrated liquid fertilizer once more. Generally, for a flower pot with a diameter of 20 cm, a vigorously growing plant uses about 100 grams of soybean cake fertilizer over the whole year.
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