What fertilizer is best for fertilizing roses? A detailed guide to choosing fertilizer

For fertilizing roses, nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, calcium fertilizer, magnesium fertilizer, zinc fertilizer, boron fertilizer and other trace element fertilizers are good. Among these, nitrogen, phosphorus and potassium fertilizers are the most important, and in the early growth stage, fertilizer should be applied at a ratio of 3:1:2 as much as possible, and at a ratio of 3:1:3 during the flowering period. Field management is mainly based on organic fertilizer and compound fertilizer, and about 3000-4000 kg of fully decomposed organic fertilizer is needed per mu.

How are roses fertilized?

1. 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 that it can 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, which can prompt the root system to sprout new roots and enable vigorous growth 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 plant.

2. In addition to applying sufficient base fertilizer, during certain growth periods roses have a very large demand for fertility, and quick-acting fertilizer needs to be applied in time to provide what the plant needs for growth. Generally, topdressing is carried out 3-4 times each year.

(1) Budding stage: at this time the temperature rises, the underground root system begins to grow and develop, and compound fertilizer should be applied as topdressing to promote rapid growth of the plant's branches and leaves.

(2) Bud stage: this is the period when flower buds are forming, buds sprout and leaves unfold, root growth reaches its peak, and the demand for fertilizer is very large, so fertilizer must be applied in time.

(3) Full flowering stage: this is the key period for roses, related to the level of yield and the quality of the flowers, but the plant's nutrients cannot meet the needs of growth, so quick-acting fertilizer should be applied in time.

(4) After flowering: at this time the branches and leaves stop growing, the flowers have matured and been harvested, and the plant's photosynthesis is still proceeding, with a large amount of nutrients accumulating in the root system. At this time, whether to apply topdressing can be decided according to the condition of the plant.

The above is the relevant introduction to what fertilizer to use for fertilizing roses. We hope it is helpful to everyone.