Roses like loose and fertile soil, and sandy soil with good drainage is recommended. If you use clay soil with poor ventilation, the roots will not absorb enough nutrients, which will easily lead to poor growth and unsatisfactory flowering.
Roses do not tolerate waterlogging, but they are water-loving, the top layer of soil should be watered when dry, in order to completely soak the potting soil as a principle. Must avoid stagnant water, prolonged stagnant water will cause root rot.
Roses are not very strict on fertilizers, especially if the soil has enough nutrients. If the nutrients are insufficient, you can choose a compound fertilizer rich in nitrogen, phosphorus and potassium, which is usually sold on the market, and the amount of fertilizer should not be too much, and thin fertilizer can be used.
Extended information:
Rose main disease:
1, powdery mildew. When infected, the leaves appear convex, convex color becomes pale with white powdery material, the leaves form uneven gradually curled, the disease spreads, the entire back of the leaf covered with a layer of grayish-white mold, serious, buds, pedicels, the entire branch pole, the leaves are covered with a layer of mold, the new buds, the leaves are curled.
2, mildew. Mainly harm leaves, new shoots, stems, pedicels and petals. First infested growth points, leaves become purple to brownish-black, infected leaves at first irregular small spots, and then gradually withered or fall off, the tip of the disease dried up. Flowers, pedicels, petals infected with similar spots.
3, aphids occur throughout the year, dry when the damage. The early stage of the occurrence of the need to eliminate as soon as possible, especially the new shoots of the period of vigorous development, spraying a variety of insecticides have a good control effect. The key parts of the spray are the growing point and the back of the leaves.