1、 Fertilization times of rose flowers in winter:

Before the beginning of winter, you can apply cake fertilizer with high concentration once, or you can use continuous and effective organic fertilizer, such as rotten fertilizer, to turn the fertilizer into the soil to make it absorb the fertilizer in winter, and then when it enters the dormancy period in winter, you don't need to apply fertilizer again

2、 Type and quantity of fertilizer for rose flowers in winter:

For the rose planted on the ground, a circular ditch can be dug around the outside of the rhizome after pruning. According to the size of the plant, each plant can be buried with 200g-300g fertilizer cake, 500g bird manure or 2.5-3kg wet soil in the fertile pond, so as to meet the requirements of its growth and flowering in the second year

2 for the rose planted in the pot, after pruning, the plant can be detached from the pot, shake off part of the long-standing soil, cut off the rotten and withered roots, and replace them with fertile loose culture soil. At the same time, 50-100 grams of rotten and mature fat cake can be buried in the lower part of the middle of the pot, so as to meet the requirements of growth and flowering in the second year

III Precautions for applying fertilizer to rose flowers:

1. During the growth period, it is mainly to add fertilizer. Remember the principle of multiple application of thin fertilizer and water. Bo Feishui is mixed with seven parts of water and three parts of fertilizer, and fertilized about once a week. In either case, do not pour the fertilizer that has not been diluted with water directly into the basin

2. The fertilizer of this plant is mainly organic fertilizer, which can only be used after full decay and maturity

3. Fertilization should be carried out in sunny days. Loosen the soil before fertilization, and then carry out it when the soil is slightly dry at night, so as to facilitate the absorption of roses

4. After fertilization, the next day must be watered with "backwater", which can reduce fertilizer damage

5. When applying fertilizer, the stems and leaves should not be stained with fertilizer liquid, and should be sent down along the edge of the basin