What to do if geranium leaves turn yellow in summer
Main content introduction: The introduction of how to deal with the yellowing of geranium leaves in summer and the related introduction of green plant flowers for the maintenance precautions of geraniums in summer will surely bring you help. Let's learn about it together!
Geraniums are very beautiful flowering plants that can bloom all year round if well cared for, but that is in regions with spring-like weather all year round. Now that the northern regions have entered the high-temperature season, many flower enthusiasts report that their geraniums are turning yellow, and they don't know the specific reason for the yellowing, which can lead to a continuous and severe situation, ultimately causing the entire geranium to die completely.
1. Poor ventilation in the environment
In summer, the temperature is already very high, and geraniums grow, but very slowly. If you put it in an environment with very poor ventilation, where it is hot and stuffy, its roots will become stuffy. The initial manifestation is that the edges of the old leaves turn yellow, gradually spreading to more leaves, and after a long time, the leaves will fall off, leaving only the stem, so we need to strengthen ventilation.
How to strengthen ventilation? You can put it next to the window or in a corridor. It's also possible to add an electric fan manually to ensure ventilation. After watering, it is essential to ensure ventilation to allow the surface of the soil to dry quickly, which will prevent the roots from becoming stuffy. Because root stuffiness is just an early sign, continuing this way can easily lead to root rot.
2. No sunlight
When we grow geraniums in summer, we put them in a place with weak sunlight, thinking that they are dormant and cannot be exposed to strong sunlight, otherwise they will be sunburned and die. However, this idea is also wrong. What we should do is to give them sunlight in summer. The geraniums I grow are directly placed in a shed with about 50% shading.
What to do if geranium leaves turn yellow in summer
At home, we can give them sunlight before 10 am or after 3 pm, ensuring that the duration of sunlight is not less than three hours to avoid problems. If they are in a dark environment for a long time, the new leaves can grow, but they grow slowly, and after they grow, the entire leaf is yellow, which is caused by this, so it's necessary to gradually increase sunlight.
3. Not watering with fertilizer
In summer, geraniums grow slowly and enter a dormant state, and many people say that you cannot use fertilizer during this time. Who told you that geraniums are dormant in summer? In fact, they only grow slowly when the temperature exceeds 30 degrees, especially at night when they still grow. If you are using garden soil, it has already lost its nutrients, which can easily cause the lower leaves to turn yellow.
In the early stages, one or two leaves may turn yellow, but in later stages, it will increase significantly, and in severe cases, it can lead to the entire plant turning yellow, with leaves falling off and dying. Therefore, we need to fertilize at home, but use less fertilizer and ensure a low concentration. For example, we can supplement with a balanced nitrogen, phosphorus, and potassium fertilizer, at a concentration of 1:1000, watering once a month, which will not cause any problems. We can also dilute the fertilizer and spray it on the leaves in a well-ventilated environment, once a month, which can also help to prevent the leaves from turning yellow.
Geraniums are herbaceous plants with many varieties of flowers and colors that bloom beautifully. They almost never have problems in spring, autumn, and winter, but they can turn yellow in summer. If your plants turn yellow, check if you have made any of these three mistakes and correct them as soon as possible to keep the leaves green and healthy.
The above comprehensive method explanation on what to do if geranium leaves turn yellow in summer and the related maintenance precautions for geraniums in summer is hoped to be a modest contribution that can help solve your green plant problems.