When is the rose fertilizing in spring
As one of the three treasures of the courtyard, the rose is inseparable from scientific fertilization management. Every spring, as the temperature rises, the rose enters a critical period of buds and leaves expansion. Reasonable fertilization strategies directly determine the number of flower buds and flowering quality. This article will systematically analyze the core points of spring rose maintenance for flower friends from fertilization timing, methods and techniques to matters needing attention. 1. The best fertilization time for roses in spring 1. Dual indicators of temperature and phenology When the temperature stabilizes at 12-15℃ and new buds germinate at 2-3 centimeters, it marks the arrival of the golden period of fertilization. At this time, the root system begins to be active, mostly in the middle and late March in North China, and can be advanced to the end of February in Jiangnan. 2. It is recommended to choose time periods in the morning when the weather is cloudy. At this time, the soil temperature is appropriate and the fertilizer effect is avoided due to strong light at noon. In case of continuous sunny days, watering can be carried out in the evening. 2. Comprehensive strategy for scientific fertilization of rose 1. Base fertilizer and topdressing are combined with early spring and loosened soil apply decomposed sheep manure (500g per plant) as the base fertilizer. In April, additional phosphorus and potassium fertilizers (such as potassium dihydrogen phosphate 1:1000 solution) are applied during the budding period to form a long-term + quick-acting nutrient supply system. 2. The sandwich fertilization method first irrigates the soil through water → spreads granular fertilizer (such as Aolu 318s) on the surface layer → covers 1 cm of plain soil → irrigates thoroughly twice. This method can prevent fat injury and ensure slow release effect. 3. Foliar fertilizer efficiency enhancement techniques Use an atomizing nozzle to evenly spray the back of the leaves, control the urea concentration within 0.2%, and use it with 0.1% iron chelate. The best spraying effect is 10 days apart. 3. Key precautions for rose fertilization 1. Avoid the protection points of flower buds. When fertilizing, use paper tubes to cover the flower buds. Especially when spraying foliar fertilizer, spray downward at an angle of 45° to avoid fertilizer liquid flowing into the flower center and causing burns. 2. Special weather response strategies should delay fertilization in case of cold spring and use granular slow-release fertilizers on continuous rainy days. After fertilization in hot and dry weather,"root water" should be watered immediately to reduce the soil EC value.
Mastering scientific fertilization methods and precise daily maintenance can allow roses to grow explosively in spring. It is recommended that flower lovers establish a fertilization calendar and dynamically adjust the plan based on the actual growth of the plants. Keep in mind the principle of "applying thin and diligent" and let your roses bloom in an amazing sea of flowers in spring.