Geranium Leaves Turning White (3 Reasons with Solutions)

You’re working so hard on your garden’s growth. But your geranium leaves are turning white! Nevertheless, the issue can be resolved!

So, why are geranium leaves turning white?

Firstly, powdery mildew plays a negative role in the color of geranium leaves. Besides, low light also causes geranium leaves to turn white. Moreover, the damage of the ozone layer causes a lot of disruption to these leaves.  

You might consider sticking with us for a while. Because we’ve got the details about this issue in depth!

3 Causes for Geranium Leaves Turning White

geranium leaves turning white

You must be stressing over your geranium leaves for turning white! But no worries! Because we’re here to give you clues, causes, and solutions to this issue!

Reason 1: Powdery Mildew

Powdery mildew is a type of fungus. It coats the geranium leaves in a white coating. 

Powdery mildew is caused by fungi belonging to the Erysiphales family. All it takes is a few spores on the leaves to start the process. Gradually, the fungi start to spread across the plant’s surface. 

Apples, geranium, cucumbers, marrows, and zucchinis are generally harmed by it. When it comes to grain crops, powdery mildew is a serious issue.


Even though powdery mildew produces little damage, it can induce leaf whitening. Powdery mildew can be treated with chemical fungicides. Because it mostly affects the plant’s surface. Spray edible crops with a natural, organic fungicide as per the size of your plants.

You might be confused to consider the best organic fungicide. So we’d like to help you out with two of the best fungicides!

These products are some of the best to treat your plants. The quality is quite standard.

Powdery mildew flourishes in humid environments. The temperature for this lies between 60° and 80°F. So, keep humidity and leaf wetness under control. 

Select the best planting place. It’s best if you can find a spot that gets plenty of sunlight. Plants should be spaced far apart to allow for adequate airflow. To avoid contracting this condition, follow the above steps to the solution.

Reason 2: Lack of Light

Low-light plants have lengthy, leggy growth and fragile stems. Leaves like geranium leaves are affected like this. Besides, stems and leaves turn pale yellow or white. 

The dark-grown plant turns white due to a lack of chlorophyll. The pigment chlorophyll is responsible for the green hue of leaves. Chlorosis is a condition in which the amount of chlorophyll produced by the leaves is insufficient.


To remedy this problem, choose a location where your plants will receive adequate light. This is the first thing you should do. Furthermore, send the soil to a soil testing lab for nutrient analysis. Make sure the soil pH isn’t too alkaline by testing it. The pH of 6 to 7 is good.

Moreover, make sure to place the plants correctly. Cutting the leaves should be done regularly, and it should be done correctly. Pruning/cutting ensures as much sunlight as possible penetrates all plant surfaces. 

Make sure to use good-quality pruning shears for pruning. Here are some of our suggestions-

Reason 3: Damage in Ozone Layer

Ozone is a plant-damaging air contaminant. Ozone is generated when ultraviolet (UV) light strikes oxygen (O2) molecules. Besides, nitrogen oxides spontaneously make ozone (O3). During respiration, it enters leaf openings called stomata and oxidizes. 

The ozone concentration determines the severity of the harm. It’s the length of time the plant was exposed to it, and the plant’s sensitivity. 

Damage to the skin can cause uneven lesions that are white, or dark brown. Bleaching of the upper leaf surface is also a frequent indication of ozone degradation. 


Unfortunately, there is no way to reverse the effects of ozone depletion. You can, however, use a variety of management tactics to avoid issues. Like, sprays can also be used to provide protection. 

Here are a few of our recommended plant protection sprays-

These sprays coat plants in a layer of small mirror prisms. This tiny mirror reflects harmful UV rays while allowing good light to get through.

Plants that are kept in good health at all times are more resistant to damage. 

So, if you’re in a drought, make sure you’re watering as per your plant needs. It’s good to water them once a week. Fertilize according to the soil analysis results. 

Make sure the soil you choose for greenhouse plants is permeable, well-draining, and not compacted.

These are the main causes for your geranium leaves turning white. Not only that but almost all the gardening plants are affected by the above reasons. But these can be more or less resolved. Just follow the steps we provided in the solution.

Frequently Asked Questions

Question: What happens when geraniums are overwatered?

Answer: Edema is commonly known as dropsy. It is a disease that can affect indoor geraniums if they are overwatered. With this disease, you’ll see water-soaked sores that eventually become harsh and rusty in appearance. Reduce watering and relocate the plant to a brighter location to solve this problem.

Question: How may I revive a dying Geranium?

Answer: It’s often as simple as adding fertilizer to the soil to revive your geraniums. Furthermore, you may just trim away any weak or damaged leaves, stems, or flowers. Geraniums can often be rejuvenated by these.

Question: Can I make my geranium bushy?

Answer: A geranium should be pruned firmly at least once a year to maintain it compact and bushy. The more frequently you prune your geranium, the better it will preserve its attractive shape.

Final Words

We hope, now you know the reasons for your geranium leaves turning white. We attempted to find solutions to its problems. This way your gardening keeps away all the odds! 

Happy gardening!

2 thoughts on “Geranium Leaves Turning White (3 Reasons with Solutions)”

  1. Pingback: Geranium Johnson’s Blue Vs Rozanne (Which One’s a Better Choice)

  2. You didn’t give the names of the protection sprays for my Geraniums in your article.
    Thank you.

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