If the humidity is lower than 70%, it will directly affect the differentiation and growth of flower buds. If it is too wet, it will lead to root rot and leaves falling off. Air, soil, water and fertilizer contain alkali, which makes plants unable to absorb iron, affects the formation of chlorophyll, makes branches wither, leaves scorch and even die.
The growth period is 18 ~ 22℃, and the wintering period is 5 ~ 10℃. If it is lower than-10℃, it will be easily frozen. Gardenia is not cold-tolerant, so it is necessary to pay attention to the appropriate time to enter and leave the room. Generally enter the room in the middle of 10, and put it in a sunny place after entering the room. The room temperature should be kept at 10- 12℃, and the lowest temperature should not be lower than 0℃. It is not suitable to leave the house in early spring, usually in late April.
Extended data:
breeding method
Propagation is mainly based on cutting and layering.
Cutting method
Gardenia branches take root easily. Warm land in the south is often cut in March-65438+10, and warm land in the north is often cut in May-June. Cutting strong and mature branches into sand beds can easily take root and survive as long as they are kept moist. It runs from April to July. After cutting, only the top two leaves and terminal buds are left. Put them in a container filled with clear water and change the water frequently to avoid the incision from rotting. After 3 weeks, they begin to take root.
layerage
Generally, it is carried out around Tomb-Sweeping Day in April or in rainy season. In April, select 1 year-old robust branches from 3-year-old mother plants, which are 25 ~ 30 cm long, and press them to the ground, which will cut off the buried parts of the branches. If the cut part can be soaked in 200ppm powdered acetic acid and then covered with soil for compaction, it will be easier to take root.
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