Matters needing attention in greenhouse Flower planting in Winter

Adjust the appropriate temperature according to different flowers. Flowers that like high temperature, such as poinsettia, African impatiens, begonia and fairy ball fleshy flowers, should try to put the flowerpot in the room with plenty of sunshine and high temperature (between 20 ℃ and 25 ℃), the lowest temperature should not be lower than 10 ℃. For flowers that like medium temperature, the suitable temperature in winter is 18 ℃ to 22 ℃, and the lowest temperature should not be lower than 6 ℃. For flowers that like low temperature, the winter temperature should be kept between 12 ℃ and 15 ℃, and the lowest temperature should not be lower than 2 ℃.

Flowers that bloom in winter and spring like light and should be placed on the windowsill or near the windowsill where the sun is sufficient. Evergreen flowers and trees that like sunlight but can withstand low temperatures or flowers in a dormant state can be placed in a cool place with scattered light. Generally speaking, flowers that are not strict with light can be placed in a cool place without light.

Fertilization: most flowers enter the dormancy period in winter, so it is necessary to reduce or stop fertilization as far as possible. The main selection methods of indoor ornamental plants are non-dormant indoor flowers in winter, such as evergreen flowers, brown bamboo and green pineapple, when the room temperature is about 5 ℃, there is basically no requirement for fertilizer, so there is no need for topdressing, if the temperature is low, fertilization is prone to root rot. The main reason is that the plant root system grows slowly in winter, and the fertilizer applied can not be absorbed by the root system, but will hinder the normal absorption of the root, and the root will rot when it is serious. If the room temperature is higher (more than 20 ℃) and the flowers bloom in winter, it is necessary to apply dilute organic liquid fertilizer every half a month, or a small amount of compound fertilizer. When raising potted flowers in the family, it is best to use floral fat tablets without peculiar smell, or fermented Amoy rice water, so as to prevent fat flavor from polluting the indoor environment.

Watering: due to low temperature in winter, water for watering flowers should be stored or dried with utensils. Do not water flowers directly with tap water to prevent excessive temperature difference and damage to the root system. Because the temperature continues to decline in winter, the metabolism of flowers is slow, or enter a dormant state, general potted flowers should strictly control fertilizer and water. If the pot soil is not too dry, do not water, especially shade-resistant flowers, but also to avoid excessive watering caused by rotten roots and leaves. Generally speaking, the two main methods of flower fertilization should be watering around noon. For some evergreen flowers that like shade and dampness, you should often spray the leaves with water close to room temperature to clean and remove dust to facilitate photosynthesis.

Pest control: due to poor indoor ventilation in winter, some flowers often have powdery mildew, soot, aphids, red spiders and other diseases and insect pests. When spraying pesticides, it is best to move the flowerpot outdoors, or you can bury insecticidal tablets in the soil. In addition, the indoor should pay attention to ventilation, the whole winter should be in sunny weather at noon to open windows for ventilation, in order to reduce the occurrence of diseases and insect pests, but also conducive to the robust growth of flowers.