Cultivation Techniques and Disease and Pest Control for Potted Roses
Comprehensive explanation of the small experience of the rose clinic, cultivation techniques and disease and pest control for potted roses. The following is an introduction by the editor of this site.
【Rose Cutting Propagation】
1.1 Cutting Period. The local area is in the Yangtze River Valley, and rose seedlings are mostly propagated in spring and autumn. Spring starts from the end of April and ends at the end of May. Autumn starts from the end of August and ends at the end of October. Autumn cuttings cannot be transplanted in the same year, as the young roots are underdeveloped and have poor cold resistance. Winter frost prevention measures must be taken.
1.2 Potting Soil Preparation. Small and medium-sized clay pots with a diameter of 15-20CM should be selected for seedling propagation. The soil for cutting should be well-draining loam mixed with 30% chaff ash and mixed evenly for later use.
1.3 Cutting Selection. Choose healthy, disease-free new branches from the mother rose plant, cut into lengths of 7-15CM, with heels, and leaves should be retained during the growing season. To improve survival rates, collect, process, cut, and water immediately.
1.4 Potting. Cover the bottom drainage holes of the selected pot with several pieces of tile, add a little sand, then add coarse soil sifted out, occupying 1/5 of the pot height, which is conducive to future drainage. Add mixed soil, occupying 3/5 of the pot height, shake the pot several times to make the soil compact, leaving 1/5 of the pot mouth unfilled for watering. Pay attention to the depth of cutting: when the temperature is high in spring and autumn, the cutting should not be planted too deep, with 1/3 of the cutting length in the soil. The density of cutting: generally, a 15CM diameter pot can accommodate 10-12 cuttings. After planting, shake the pot to make the soil particles close to the part of each cutting that goes into the soil. After planting each pot, water thoroughly with a fine-mist spray until the water flows out of the bottom hole.
【Post-cutting Management】
1. Placement. After watering the cuttings, they can be moved to a well-ventilated and well-lit area for cultivation. They can be placed directly on the ground, but if the area is low, they should be elevated with bricks or stones before placing them on the ground. In late spring and early autumn, when propagating seedlings, due to strong sunlight and high temperatures after cutting, shading should be provided. The shading equipment should be 1-1.5 meters high, with reed curtains being the best material. This avoids direct sunlight at noon, allows for scattered light, and receives oblique sunlight in the morning and evening, which is beneficial for the growth of the cuttings.
2. Watering. The watering of the cuttings after planting is very important, as it must ensure the required moisture for the cuttings and the oxygen in the soil (G-Y). In the early stage to the early stage, within 16 days of cutting, the soil should always be kept moist. Check twice a day, and supplement a little water when it is insufficient, but not too much. When the soil is moist but the leaves are short of water, spray some water on the leaves instead of watering the soil. After 16 days of cutting, the cut surface has healed, and the amount of watering should be gradually controlled. Water when the soil surface is slightly dry to keep enough oxygen in the soil and promote the growth of young roots. Also, avoid rain washing the cuttings, and cover the soil before heavy rain.
3. Overwintering. Since the young roots of autumn cuttings are not cold-resistant, attention should be paid to frost prevention and seedling protection. In winter, place the pots in a sunny and sheltered area, and put a layer of straw on the soil surface. Overwintering should maintain soil moisture, prevent drying and freezing, water once every 1-2 weeks, especially before the cold wave arrives, check if the soil is dry and water thoroughly if necessary.
【Potted Rose Technique】
1. Potting Time. Spring, autumn, and winter are all suitable for potting. In spring and autumn, potting is usually done in the shade or in the evening. Preparations should be made before potting.
2. Pot Selection. Common pots include clay pots, ceramic pots, porcelain pots, and purple sand pots. For growing roses, clay pots are the best, followed by purple sand pots. Small pots, with a diameter of about 20CM, are suitable for young seedlings.
3. Potting Soil. Various materials can be used for preparation, such as organic matter and soil composted into nutrient-rich soil mixed with field soil, chaff ash, etc., which has water retention, aeration, fertilizer retention, and looseness. For example, mix 1/2 field soil, 1/4 legume straw compost soil, and 1/4 chaff ash, dry in the sun, and set aside for later use.
4. Potting. After preparing the pots, nutrient-rich soil, and seedlings, potting can be done. Wash and soak the pots, place several pieces of broken tiles over the bottom hole, add a layer of coarse sand, then add some nutrient-rich soil, place the seedling roots on the soil, add more nutrient-rich soil, gently pat the pot edge, and finally compact the soil lightly. Leave 3CM at the pot mouth for watering. After potting, water thoroughly.
5. Placement. Potted roses should be placed in an open, well-ventilated, and sunny area. For a large number of potted plants, attention should be paid to convenient management. Indoor placement for viewing should be aware of lighting and ventilation, changing positions every few days.
6. Fertilizer and Water Management. In spring and autumn, water promptly when the potting soil is dry. In summer, water every day due to the hot weather. During the growing season, fertilize every two weeks with crushed cake fertilizer soaked in water, and after the fertilizer is matured, dilute the upper part of the fertilizer liquid with several tens of times of water and apply it to the potting soil.
【Disease and Pest Control】The main diseases and pests of roses include black spot disease, aphids, caterpillars, and leaf miners. Mainly adopt non-polluting technology for prevention and control. Black spot disease occurs in the plum rain season and the rainy season in autumn, causing leaf drop and affecting photosynthesis and viewing. Mainly use 1000 times 50% carbendazim solution or 1:3:200 times Bordeaux mixture to spray on leaves for prevention. Aphids mainly occur in spring, damage leaves, and affect photosynthesis. Use 3000 times of the kill solution or 5000 times...
This article shares the specific content of the cultivation techniques and disease and pest control for potted roses, and reproduction is prohibited without permission!