How to fertilize roses? The latest method is easy to understand at a glance
We are all familiar with roses. They are flowers that symbolize love and have long been deeply loved by people. Roses are fertilizer-loving plants with extremely well-developed root systems and very fast growth. To achieve high yields, fertilization is an important task. So how should roses be fertilized when planting? Let's take a look at the detailed introduction below.
1. Fertilizer requirements
Roses need large amounts of different types of fertilizer during growth, among which nitrogen, phosphorus and potassium fertilizers are the most important. Nitrogen fertilizer is an important nutrient for roses. When nitrogen fertilizer is sufficient, rose plants can grow with lush branches and leaves. When nitrogen fertilizer is insufficient, roses grow weakly and their leaves turn yellow and withered. However, if nitrogen fertilizer is excessive, the plants will grow excessively, causing deformed flowers and affecting yield. Phosphorus fertilizer can promote the growth of rose roots. When phosphorus fertilizer is sufficient, rose plant leaves are thick and flowers are brightly colored. When phosphorus fertilizer is insufficient, branches are weak and flowers show a drooping symptom. Potassium fertilizer can promote normal growth of new shoots and young leaves of roses, increase the number of flowers, and help increase yield.
However, each growth stage has different requirements for these three fertilizers. In the early growth stage, the ratio of nitrogen, phosphorus and potassium is 3:1:2, while in the flowering stage it becomes 3:1:3. In addition to these three main elements, roses also need trace elements such as calcium, magnesium, zinc and boron, which should be added during planting.
2. Apply sufficient base fertilizer
When planting, sufficient base fertilizer is generally applied to the field in combination with land preparation. The base fertilizer is generally mainly organic fertilizer and compound fertilizer, so as to provide sustained fertility for rose growth and also meet the plant's demand for trace elements. Generally, 3000-4000 kg of fully decomposed organic fertilizer is applied per mu, combined with 30-40 kg of high-concentration compound fertilizer. The base fertilizer is best applied after leaf fall in autumn, and as early as possible. It is generally applied in furrows, so that the roots can sprout new roots and grow vigorously after the beginning of spring the following year. If the base fertilizer is applied too late, it is unfavorable to the normal growth of the plants.
3. Timely topdressing
In addition to applying sufficient base fertilizer, roses have a great demand for fertility during certain growth periods, and quick-acting fertilizer needs to be applied in time to provide for the plant's growth needs. Generally, topdressing is done 3-4 times a year.
The first is at the bud break stage, when the temperature rises and the underground root system begins to grow and develop. At this time, compound fertilizer should be applied to promote rapid growth of branches and leaves.
The second is at the flower bud stage, which is the period when flower buds are forming, buds sprout and leaves unfold, and root growth reaches its peak. The fertilizer demand is very large, and fertilizer should be applied in time.
The third is at the full flowering stage. This is the key period for roses and is related to the level of yield and the quality of the flowers. However, the plant's nutrients cannot meet the growth needs, so quick-acting fertilizer should be applied in time.
The fourth is after flowering. At this time, branches and leaves stop growing, the flowers have matured and been harvested, and the plant's photosynthesis is still ongoing. A large amount of nutrients accumulates in the root system. At this time, whether to apply topdressing can be decided according to the plant's condition.
The above is an introduction to how to fertilize roses. We hope it can help you. To learn more about flower planting knowledge, please follow us.