How to fertilize Chinese roses
As one of the three treasures of the courtyard, Chinese roses have unique fertilizer requirements. Scientific fertilization not only helps Chinese roses maintain strong growth, but also enhances disease resistance and flowering quality. This article will analyze the key points of fertilization at different growth stages in detail to help you master the core techniques of Chinese rose maintenance.
Ⅰ. Chinese rose growth cycle fertilization guidelines
1.1 Application of base fertilizer for new seedlings
Newly planted Chinese rose seedlings need special attention to the proportion of base fertilizer. It is recommended to mix decomposed sheep manure and pine bark in a 3:1 ratio, adding 100-150g for every 20cm pot diameter. It is especially recommended to add 5% bone meal to enhance the phosphorus element, which can effectively promote the development of fine roots, but avoid direct contact with roots to prevent root burning.
1.2 Overwintering nutrition reserve for mature plants
Plants over two years old need to complete the application of overwintering fertilizer 15 days before the frost. It is recommended to use the annular trench method: dig a 15cm deep trench 20cm away from the main stem, apply 200g of rapeseed cake fertilizer and 300g of earthworm dung per plant, and combine with 5ml of seaweed extract solution for root irrigation, which can significantly enhance the cold resistance of the plant.
Ⅱ. Differential management of Chinese rose cultivation methods
2.1 Annual maintenance of Chinese roses planted in the ground
Open-air cultivated plants need to be fertilized three times a year: apply high-nitrogen fertilizer after the惊蛰 (Jingzhe, the day when thunder roars), supplement phosphorus and potassium fertilizers before flowering, and bury fish intestines fertilizer before winter. Special attention should be paid to adding microbial agents during the rainy season to prevent soil compaction and promote nutrient absorption.
2.2 Potting techniques for Chinese roses
It is recommended to mix slow-release fertilizer granules into the new soil when repotting potted plants every early spring. The ratio of Ogreen 318s to fermented pine needles is 1:2, with banana peel pieces placed at the bottom as a long-acting potassium source, magic fertilizer in the middle as a phosphorus reservoir, and a 5cm layer of pure vegetarian soil on top to protect the roots.
By mastering the fertilizer requirements of Chinese roses at different growth stages and combining them with scientific fertilization methods, not only can the flowers bloom continuously, but also a healthy growth system of the plant can be constructed. It is recommended to adjust water after fertilization according to local climatic characteristics, regularly test the soil EC value, and make rose maintenance more effective.