How to fertilize spring roses
As the temperature warms up, the rose enters the most important growing season of the year. As the queen of flowers, the quality of spring fertilization is directly related to the flowering effect throughout the year. Mastering scientific fertilization methods can not only promote the germination of new branches, but also enhance the stress resistance of plants, laying a solid foundation for subsequent blooms. The core strategy for spring rose fertilization organic fertilizer optimization plan Composed organic fertilizer is the first choice in spring. It is recommended to use cake fertilizer (rapeseed cake/peanut cake), fermented soybean meal or oil residue. This type of fertilizer is rich in nitrogen, phosphorus, potassium and trace elements. It is recommended to mix 500g per square meter as base fertilizer. The fully fermented organic fertilizer is dark brown and odor-free. It can improve the soil aggregate structure and continuously release nutrients for 2-3 months. Scientific ratio of compound fertilizers When there is insufficient organic fertilizer, you can choose balanced compound fertilizers (N-P-K=15-15-15). It is recommended to use the circular ditch application method, open shallow ditches 20cm away from the main stem, apply 15-20g per plant, cover with soil and then pour through water. When used together with biostimulants such as seaweed extract, it can increase fertilizer utilization rate by more than 30%. Key operation precautions: Fertilization frequency is controlled. Fertilization is applied once every 15 days during the germination period, and adjusted to once every 10 days during the budding period. It is recommended to adopt the principle of "applying thin fertilizer frequently" for potted roses, diluting the regular amount by 50%, and applying it every week. Pay special attention to supplementing fertilizer after rain to avoid nutrient loss. The safe distance control fertilization area should be at least 10cm away from the main stem, and a buffer zone of 20cm should be maintained for ground planting. When using liquid fertilizer, water slowly along the edge of the pot and never go straight to the roots and neck. If you find foliar fertilizer residues, you should immediately wash them with clean water to avoid fertilizer damage caused by fertilization during high temperatures.
Through scientific fertilization management, roses will complete nutrient accumulation in spring, reserving sufficient energy for subsequent flower bud differentiation. It is recommended to combine flexible adjustment plans for plant growth, regularly observe leaf color and branch hardness, and timely supplement medium and trace elements to allow roses to welcome the flowering period in the best condition.