How to grow Hibiscus rosa-sinensis? Growing methods and points to note
SummarySoil: choose fertile, loose soil that is slightly acidic. Temperature: tolerates high temperatures but not low temperatures. Sunlight: Hibiscus rosa-sinensis likes light and needs plenty of sunlight throughout its entire growing period. Watering: adjust the amount of watering according to the season and climate. Management: apply more dilute fertilizer in spring and summer, and try not to fertilize in autumn and winter. Pest and disease control: in winter it is prone to damage from aphids and scale insects.
I. Soil environment
1. Hibiscus rosa-sinensis is not particularly demanding about soil. The most suitable soil for planting is fertile, loose, weakly acidic soil. This kind of soil should have good drainage and is not likely to cause waterlogging.
II. Temperature
1. Hibiscus rosa-sinensis tolerates high temperatures but not low temperatures. The most suitable growing temperature is 15 to 25 degrees. In winter, be sure to keep it warm. If it grows in an environment below 5 degrees, its leaves will easily turn yellow and then fall off. In an environment below 0 degrees, its roots, stems and leaves are easily frostbitten. It can grow normally very well in an environment above 30 degrees.
2. From after the Frost's Descent to before the Start of Winter, it is best to move it indoors for growing. If moved indoors, its ventilation should be ensured every day, and at the same time pay attention to changes in the dryness and wetness of the potting soil, water it appropriately, and stop fertilizing.
3. You can also cover it in place with paper or plastic film to keep it warm.
III. Sunlight
1. Hibiscus rosa-sinensis is a sun-loving plant. It needs plenty of sunlight throughout its entire growing period. If there is not enough sunlight, its flower buds are very likely to fall off, and it will also lead to small flowers and dull flower colors, etc.
2. As long as there is plenty of sunlight, it will bloom normally, and the flower colors will be bright.
3. However, at noon in the hot summer, also pay attention to giving it corresponding shade protection to avoid sunburn.
IV. Watering
1. When watering Hibiscus rosa-sinensis, pay special attention to watering appropriately according to the season.
2. In winter, the weather is dry and the temperature is low, so just keep the potting soil slightly moist. About once a week is enough, and the amount of water must not be too much.
3. In summer, more watering is needed, about once every 2-3 days.
V. Management
1. Management work generally refers to fertilizing, loosening the soil, pulling weeds, etc.
2. After the beginning of May, try to place it outdoors for growing. When moving it outdoors, it is best to repot it once. When repotting, also replace the soil with new loose, fertile sandy soil, then cut off excess fibrous roots, choose a place with plenty of sunlight, and at the same time apply dilute fertilizer to it once every week.
3. When watering, be especially careful and try to keep the soil slightly moist.
4. After entering autumn, the number of fertilizations should be as few as possible, or do not fertilize, otherwise it will cause autumn shoots to grow.
VI. Pest and disease control
1. In winter, Hibiscus rosa-sinensis is prone to damage from aphids and scale insects because of insufficient ventilation.
2. When placed indoors, be sure to pay attention to ventilation and light transmission, and combine with pesticides such as aphid-mite clean and mite clear for spraying to kill insects.
3. For scale insects, you can gently brush them off with a bristle brush.