Geranium, as a common ornamental plant, is loved by many gardening enthusiasts for its bright flowers and rich varieties. In cold winter, the leaves of many geraniums will show color change, which not only affects their ornamental value but also confuses the caregivers. This article will delve into the reasons for the color change of geranium leaves in winter and provide corresponding coping strategies.
Reasons for Geranium Leaf Color Change in Winter1. Insufficient Light
In winter, the duration of daylight is shortened and the intensity of sunlight is weakened, which prevents geraniums from getting enough sunlight for photosynthesis, thus affecting the production of chlorophyll and causing the leaves to change color.
2. Temperature Fluctuations
The temperature drops in winter, and geraniums are less adaptable to temperature changes, making them prone to frostbite and color change in leaves due to low temperatures.
3. Improper Water Management
In winter, the air is dry, and the water requirement of geraniums decreases. However, some caregivers continue to water them as they do in summer, leading to excessive or insufficient water, which affects the normal growth of the leaves.
4. Inadequate Nutrient Supply
In winter, the temperature is low, and the growth rate of geraniums slows down, resulting in a relatively reduced need for nutrients. However, if the application of fertilizer is not adjusted in time, leading to insufficient nutrient supply, it can also cause leaf discoloration.
Strategies to Deal with Geranium Leaf Color Change in Winter1. Increase Lighting
Try to place geraniums in a location with sufficient light, such as near a window. In case of continuous cloudy and rainy weather, artificial light sources can be used to supplement lighting.
2. Control Temperature
When caring for geraniums in winter, the indoor temperature should be kept above 10°C to prevent damage to the plant from low temperatures.
3. Reasonable Watering
Based on the weather and soil moisture, the watering frequency should be appropriately reduced to keep the soil slightly moist, avoiding excessive or insufficient watering that could affect plant growth.
4. Timely Fertilization
In winter, geraniums grow slowly, and the amount of fertilizer applied can be reduced. A low-nitrogen, high-phosphorus and potassium compound fertilizer should be chosen to promote healthy plant growth.
5. Prevent Diseases and Pests
In winter, the temperature is low, and diseases and pests are relatively few. However, it is still necessary to check the plants regularly to prevent the occurrence of diseases and pests.
The color change of geranium leaves in winter is the result of the combined action of various factors. After understanding the reasons, taking corresponding coping strategies can effectively prevent and improve this phenomenon. As gardening enthusiasts, we should pay attention to the growth environment of geraniums and provide suitable growing conditions for the plants to keep them vibrant even in winter.
References:
[1] Zhang Xiaoli, Li Xiaofang. Research on Winter Maintenance Techniques of Geranium [J]. China Flower and Horticulture, 2019, (10): 48-49.
[2] Wang Xiaohong, Zhang Min. Reasons and Control Measures for Leaf Color Change of Geranium in Winter [J]. Botanical Garden, 2018, (3): 52-53.