How to fertilize roses

Rose is no stranger to it, it is a kind of flower symbolizing love, and it has always been loved by people. Rose is a fertilizer-loving plant, its root system is extremely developed, and its growth rate is very fast. Fertilization is an important work in order to achieve its high yield. So how to fertilize roses when planting them? Let's take a look at the detailed introduction.

1. Characteristics of fertilizer requirement

Roses need a large number of different kinds of fertilizers when they grow, the largest of which is nitrogen, phosphorus and potassium. Nitrogen fertilizer is an important nutrient for roses. Only when there is sufficient nitrogen fertilizer, rose plants can grow luxuriantly, lack of nitrogen fertilizer, rose growth is weak, leaves are withered and yellow, but if excessive nitrogen fertilizer is used, the plant will grow too long, making flowers grow malformed and affect yield. Phosphate fertilizer can promote rose root growth in heavy rain, sufficient phosphate fertilizer can promote rose plant leaves to be thick and colorful, while phosphate fertilizer is insufficient, branches are weak, and flowers all show a sagging symptom, while potassium fertilizer can promote the normal growth of new shoots and leaves of roses, increase the number of flowers and increase the yield.

However, the demand for these three fertilizers varied at each growth stage, with the ratio of nitrogen, phosphorus and potassium at 3:1:2 in the early growth stage and 3:1:3 at the flowering stage. In addition, in addition to these three main elements, roses also need trace elements such as calcium, magnesium, zinc and boron, which should be added when planting.

2. Apply sufficient base fertilizer

In planting, it is generally necessary to apply sufficient base fertilizer in the field combined with soil preparation, and the base fertilizer is mainly organic fertilizer and compound fertilizer, which can not only improve the sustainable fertility for rose growth, but also meet the plant demand for trace elements. Generally, 3000-4000 kg of fully mature organic fertilizer is applied per mu. With 30-40 kg of high concentration compound fertilizer, the application of base fertilizer is best after defoliation in autumn, and as soon as possible, it is generally ditched, so that the root system can sprout new roots. so that it can grow vigorously after the beginning of spring next year, and if the base fertilizer is applied too late, it will be disadvantageous to the normal growth of the plant.

3. topdressing at the right time

In addition to applying sufficient basal fertilizer, roses have a great demand for fertility during some growth periods, which requires timely topdressing of available fertilizer to provide plant growth, usually 3-4 times a year.

First, in the budding stage, when the temperature rises and the underground root system begins to grow and develop, it is necessary to topdressing compound fertilizer to promote the rapid growth of plant branches and leaves.

The second time is in the flower bud stage, when it is the bud incubation period, the bud spreads leaves, the root growth reaches the peak, and the amount of fertilizer is very large, so it is necessary to apply fertilizer in time.

The third time is in the full flowering stage, which is the critical period of roses, which is related to the height of yield and the quality of flowers, but the nutrients of the plant can not meet the needs of growth, so it is necessary to top fertilizer in time.

The fourth time after anthesis, the branches and leaves stop growing, the flowers have matured and harvested, the photosynthesis of the plant is still going on, a large amount of nutrients are accumulated in the root system, and whether to topdressing can be decided according to the plant condition.

The above is the introduction of how to fertilize roses. I hope it can help you. If you want to know more about flower planting, please follow us.