How to care for green plants in a greenhouse to survive the winter
This article provides an explanation on how to care for green plants in a greenhouse during the winter, including methods for maintaining green plants in greenhouses and their winter care. Next, the editor will introduce the details.
1. Temperature. Adjust the temperature appropriately according to different flowers. Flowers that prefer high temperatures, such as poinsettias, African marigolds, begonias, and cacti with succulent stems, should be placed in a well-lit, warmer room (between 20℃ to 25℃), with the minimum temperature not lower than 10℃. Flowers that prefer moderate temperatures should maintain a winter temperature of 18℃ to 22℃, with the minimum not lower than 6℃. Flowers that prefer lower temperatures should maintain a winter temperature between 12℃ to 15℃, with the minimum not lower than 2℃. Additionally, flowers that bloom in winter and spring prefer sunlight and should be placed near a window or on a windowsill with plenty of sunlight. Evergreen trees and shrubs that can tolerate low temperatures and are in a dormant state can be placed in a cool area with scattered light. Flowers that are not strict about sunlight can be placed in a shaded area without sunlight.
2. Fertilizing. Most flowers enter a dormant state in winter and should have their fertilization reduced or stopped. Indoor ornamental plants that do not hibernate in winter, such as evergreen plants like bамбus and green vines, do not require fertilization when the room temperature is around 5℃. If the temperature is lower, fertilizing can lead to root rot, mainly because the plant roots grow slowly in winter and cannot absorb the applied fertilizer, which may hinder normal root absorption and cause root rot in severe cases. If the room temperature is higher (above 20℃) and the flowers bloom in winter, a thin organic liquid fertilizer should be applied every two weeks, or a small amount of compound fertilizer can be used. It is best to use odorless flower-growing tablets or fermented rice washing water to prevent the smell of fertilizer from polluting the indoor environment.
3. Watering. In winter, due to the low temperature, water for watering flowers should be stored or dried in a container and should not be used directly from the tap to prevent damage to the roots from large temperature differences. As the temperature continues to drop in winter, the metabolism of flowers slows down, or they enter a dormant state, so the watering of potted flowers should be strictly controlled. If the potting soil is not too dry, there is no need to water, especially for shade-tolerant flowers, which should avoid overwatering that can cause root rot and leaf drop. The main methods for watering flowers are generally in the morning or afternoon. For some shade-loving evergreen plants, water similar in temperature to the room should be used to spray the leaves frequently, cleaning dust and aiding photosynthesis.
4. Pest and disease control. Due to poor indoor ventilation in winter, some flowers often suffer from powdery mildew, soot disease, and pests like aphids and red spiders. Diseases can be treated with 0.1% carbendazim or thiophanate-methyl solution, and pests can be treated with 0.2% dimethoate or insecticides. When applying pesticides, it is best to move the potted plants outdoors or bury insecticide tablets in the soil. In addition, indoor ventilation should be maintained, and windows should be opened for ventilation in the middle of sunny days throughout the winter to reduce the occurrence of diseases and pests and promote healthy growth of flowers.
The above is the specific content on how to care for green plants in a greenhouse during the winter and the methods for their winter care, for everyone's reference and operation.