Home Potted Rose Spring Management
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Home potted roses adapt to external conditions. Roses generally germinate in mid-to-late March. In protected overwintering cultivation areas, preparations should be made before growth; for those grown in the ground, remove the cold protection and water thoroughly; for those stored in cellars, open the cellar lid for ventilation and sunlight; for those overwintering indoors, open the windows for ventilation, allowing the plants to gradually adapt to the warming early spring climate.
Preparing Potting Soil Potting soil is used for repotting or ground planting. For cuttings that have taken root, use general potting soil; for perennial plants, a mixture of three parts garden soil, one part sandy soil, and one part decomposed manure can be used, but the soil should be loose in texture, with good drainage and aeration, and rich in humus.
Repotting To avoid affecting the continued growth of potted roses, repotting must be done before the tender buds and new roots start to grow in early spring (mid-to-late March), as this causes less damage to the plant. Do not water before repotting to prevent the soil from becoming loose. During repotting, completely remove the rose from the pot, use a bamboo stick to remove some of the old soil around it, retain the protective root soil, avoid excessive root damage, cut off the old, diseased, and weak roots to promote new root growth. Use a pot slightly larger than the original one, place coarse coke or some broken tiles at the bottom for drainage, then add a layer of well-rotted hair, hooves, crushed bones, or phosphorus-rich slow-release organic fertilizer, and finally fill with potting soil (do not overfill the pot), tamp it down, water thoroughly, and place it in a room with diffused sunlight.
More Sunlight Roses are sun-loving flowers and need at least 4-5 hours of sunlight a day. Although the temperature may rise in early spring, it is still cold in the morning and evening. Therefore, when it is warm and sunny, you can move the pot to an outdoor ventilated and sunny area around 10 am, and then move it back around 2 or 3 pm. This can raise the temperature of the potting soil and accelerate the growth of the roses.
Shaping and Pruning The purpose of pruning roses is to concentrate the limited nutrients and shape the whole plant into a full and complete tree form. Spring pruning should remove excessive suckers and long branches, leaving 1-2 full buds on each branch, and removing the rest. For grafted seedlings, the root buds should be removed, and care should be taken to control the growth direction of the buds to ensure a full and beautiful plant shape.
Watering and Fertilizing After repotting, water thoroughly once, then water according to the dryness of the potting soil, following the principle of "watering when dry and watering thoroughly." Watering should be done around noon, with the water temperature slightly higher than the soil temperature. After repotting, since the potting soil already has sufficient fertilizer, no additional fertilizer should be added during the first month. After new buds grow, depending on the nutrient consumption of the potting soil, a thin liquid fertilizer with more phosphorus can be applied once a week. With the above careful management, by mid-to-late May, the roses will bloom into colorful flowers.
Disease and Pest Control In conjunction with repotting and pruning, a 0.5-degree lime sulfur solution should be sprayed universally, and fungicides should be sprayed frequently to prevent diseases. The main pests include aphids, red spiders, and scale insects, which should be killed in a timely manner. (1) Aphids can be removed with a brush dipped in water, or sprayed with 40% dimethoate or dichlorvos emulsion diluted 1500 times. (2) Red spiders can be killed by placing a burning mosquito coil in the pot and covering the pot with plastic film for about an hour. (3) If scale insects are found, they can be removed by applying chili water with a brush or small brush on the entire rose plant, which is effective in killing scale insects and also has a significant effect on controlling other diseases and pests (chili water is made by boiling 1 kilogram of water with 20-30 grams of dried chili peppers).
The above is a specific introduction to the spring management of home potted roses for reference by netizens.