Rose planting techniques (including pot culture methods and matters needing attention)

Temperature: the suitable temperature for rose growth is about 20-30 degrees. Water and fertilizer: timely and rational application of sprout fertilizer, post-anthesis fertilizer and autumn base fertilizer. Management: weeding in time, deep turning and hole expansion should be carried out after autumn to before freezing every year, and appropriate amount of fertilizer should be applied at the same time. Pruning: cut off dead or diseased branches from late April to early May every year. Diseases and insect pests: actively prevent and control common diseases and insect pests, spray medicine on roses at regular intervals.

When I went to pick roses when I was a child, if I was not careful, I would not get a thorn on its body. So I often hear about roses with thorns. Roses are beautiful, but they are not easy to grow. Let's take a look at how to plant beautiful and healthy roses with the editor.

1. Rose planting techniques

1. Preserve the appropriate temperature: the suitable temperature for roses is about 20 to 30 degrees, so it should be preserved at a suitable temperature in order to be conducive to the growth of roses.

2. Water and fertilizer management: water and fertilizer is directly related to the yield of roses, at least three times of fertilizer, sprouting fertilizer, mainly nitrogen fertilizer, post-anthesis fertilizer, after flowering, nitrogen fertilizer, combined with phosphorus and potassium fertilizer, autumn base fertilizer, after defoliation to soil freezing, early application is appropriate, mainly organic fertilizer.

3. Weeding frequently: when the soil of the rose arrives at a certain time, remember to weed the rose more. Every year after autumn to before freezing, the hole should be enlarged deeply and fertilized at the same time.

4. Pruning: cut off dead old branches or diseased branches from late April to early May every year and clear them out of the garden. Cut the 7-to 8-year-old branches 20 to 30 centimeters above the ground or dig out the whole branches, cut off the old branches and diseased branches, and plant the ramets separately so that they will not be cropped again.

5. Prevention of insect pests: there are many pests that harm roses, so it is necessary to strengthen the treatment of pests and spray the roses once in a while.

Matters needing attention in planting potted roses

1. When roses are first planted in a pot, they should not be put in the sun, but they should also be placed in a place with good light.

2. Do not use fertilizer in the soil when it is just planted. You need to wait for the seedlings to recover. After the branches and leaves grow, use fertilizer gradually. Do not use too much fertilizer at one time. Be careful to burn the seedlings. Strictly follow the principle of applying thin fertilizer frequently.

3. when the seedlings are planted, they must be watered for the first time to prevent the soil from getting wet and the soil below is still dry.

III. Environmental requirements for rose planting

1. Soil: planting soil requires loose and aerated soil, rich in organic matter, slightly acidic and aggregate structure.

2. Temperature: the suitable temperature for rose growth is 22 to 25 degrees per day, not more than 35 degrees, and 12 to 15 degrees at night. High temperature greater than 30 degrees will cause temporary wilting, although it will not die, but the plant will have physiological disorder and seriously affect its growth. It has a great impact on the growth and development of the next stage, and at the same time, the number of petals decreases, forming exposed flowers.

3. Lighting: roses are native to the temperate zone, like sunlight, and grow poorly in shady areas. it requires more than 6 hours of light every day to grow and blossom normally, but in the hot summer season, it can be reduced to 4 to 5 hours.

4. Humidity: the relative humidity should be 65% to 70%. Low humidity less than or equal to 40% affects flower color, and even causes outer petal scorch, and is suitable for the occurrence and spread of red spiders and Lepidoptera pests.

4. common insect pests of roses and their control methods

1. Powdery mildew. It often occurs in tender leaves, and other old leaves, flower stems, receptacles and even branches are also generally infected. Prevention and control methods: regular spraying, with 600 times of nitrilazole, 800 times of chlorothalonil and other agents. Spraying each time and often spraying water on the leaves can effectively reduce the occurrence of powdery mildew. Cut off the diseased branches and leaves as soon as possible to reduce the chance of retransmission.

2. Downy mildew. It mainly harms leaves, shoots, stems, pedicels and petals. Control methods: disease-resistant varieties should be selected and carefully maintained, the relative humidity should be controlled below 85%, ventilation should be paid attention to, and nitrogen fertilizer should not be applied too much. Spray 72% Krou in time for the first attack.

3. Aphids. Aphids occur all the year round and do harm when they are dry. Control methods: spraying a variety of insecticides has a better control effect. The key spraying sites are the growth point and the back of the leaf. The commonly used agents are aphids, lice, etc., and can also be fumigated with dichlorvos, the effect is better, but can not be used after flowering.

4. Red spider. Red spider absorbs chlorophyll from leaves, reduces the efficiency of rose photosynthesis, and spreads rapidly, which can quickly damage leaves and stop plant development. Prevention and control methods: at the initial stage of occurrence, the mite can be sprayed with 600 times of the dead liquid, or with the spray of 1000 to 1500 times of the mites Jing, the effect is good.

Have you all learned how to plant roses after seeing so many roses? Roses must be prevented and treated in time after finding the disease. In the future, we can learn to plant beautiful roses at home. I hope the editor's article can bring help to you.