How to Grow Cotton Rose Hibiscus? Detailed Guide to Cultivation Methods and Precautions
The cotton rose hibiscus is a flower variety mainly produced in our country, and it is well known for its high ornamental value. The cotton rose hibiscus is mainly appreciated for its flowers, which are relatively large and come in many colors, commonly including rose red, pink, and white. The cotton rose hibiscus attracts many people to grow it, but there are also many points to pay attention to when cultivating it.
How to Grow Cotton Rose Hibiscus
1. Pot and soil selection. To grow cotton rose hibiscus, you can choose a relatively large porcelain flower pot or an unglazed clay pot. For the soil, generally use loose, fertile, well-aerated soil, and the soil should be somewhat moist.
2. Light. Cotton rose hibiscus likes ample light, and sufficient light must be ensured during cultivation, especially during the flowering period in autumn, as insufficient light can easily cause bud drop. In winter, sufficient light must be ensured, and in summer, when the sunlight is strong, it is best to provide shade.
3. Temperature. Cotton rose hibiscus likes a warm growing environment and has a certain degree of cold tolerance, but in winter it is best to place it indoors to overwinter, keeping the temperature above 10°C, which can help it overwinter better.
Cultivation Methods for Cotton Rose Hibiscus
1. Watering. The cotton rose hibiscus also has relatively poor drought tolerance, so during the growing period, moisture should be kept sufficient to meet its growth needs. When the flower buds show color, water should be withheld to control its growth and ensure that nutrients are retained in the flowers.
2. Fertilizing. In spring, when the flowers sprout, more fertilizer and water are needed. Around the flowering period, it is recommended to apply a small amount of phosphorus and potassium fertilizer. In winter or spring, some decomposed organic fertilizer can be applied, which can help the plant grow more vigorously with abundant branches and flowers.
3. Pruning. The cotton rose hibiscus needs its branches pruned before and after flowering, which benefits the sprouting and growth of side buds. Also, withered leaves should be cut off promptly to increase light exposure. The cotton rose hibiscus is relatively tolerant of pruning, and appropriate pruning can be done according to your own preferences and for aesthetic appearance.
Precautions for Growing Cotton Rose Hibiscus
The cotton rose hibiscus likes a warm, humid environment with ample sunlight, is slightly tolerant of partial shade, and has a certain degree of cold tolerance. It is not strict about soil requirements, but grows best in fertile, moist, well-drained sandy soil. It can be planted in a sunny spot in the courtyard or beside a pond. Normally, management is relatively extensive. Pay attention to watering during droughts. Every winter or spring, dig trenches around the plant and apply some decomposed organic fertilizer, and water and cover the soil promptly after fertilizing.
Pests, Diseases, and Control of Cotton Rose Hibiscus
1. Powdery mildew. Diseased plants should be burned promptly when found. In the early stage of the disease, treat by spraying chemicals: a 2000-fold dilution of 25% triadimefon, or spray a 1500-fold dilution of 70% thiophanate-methyl wettable powder.
2. Angular leaf spot tussock moth. For control, in winter, scrape off and remove all the larvae overwintering under the bark. In early or mid-June, spray chemicals: you can use a 2500-fold dilution of 20% permethrin emulsifiable concentrate, or a 1000-fold dilution of 90% trichlorfon.
3. Small green leafhopper. It mainly damages the leaves, causing white spots to appear, and in severe cases it can cause entire leaves to turn white and fall off, seriously affecting the plant's growth. Clear the weeds around the plant to destroy the places where the pests and diseases overwinter. At the first peak of the disease, spray 1500-fold dilutions of each of 50% fenitrothion, 50% new sulfur-phosphorus, and pyrethroid insecticides, or a 1500-fold dilution of 50% malathion.
4. Carmine spider mite. In the early stage of the disease, the damaged leaves show small yellowish-white spots, which slowly spread to the entire leaf, causing it to wither, yellow, curl, and fall off. Spray a 1500-fold dilution of 40% omethoate on the undersides of the leaves for control.
The cultivation of cotton rose hibiscus can start with its growth habits. During cultivation, the soil ratio must be done well, and shade treatment should be done in summer. In the later stage of cultivation, it is also necessary to strengthen fertilizer and water management and pest and disease control. Only in this way can the cotton rose hibiscus grow well.