Maybe you have yellow leaves on roses and you are getting worried, you don’t know what is happening to it, why it is happening, and how to fix it. Is that so?
The leaves of roses are green, some varieties of roses have a more intense green, even reddish color in their early stages, while other varieties of roses have light green leaves.
We also find that there are varieties of roses with shinier leaves and others with duller leaves.
But always, always, a rose bush is healthy when its leaves are green.
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What Causes Yellow Leaves on Roses
If the leaves of a rose bush turn yellowish, it is a symptom that something is wrong, it is one of how the bush externalizes the existence of a problem.
If we have a rose bush with yellow leaves, we are facing a health problem, which may be due to different problems.
Below we will explain everything about yellow leaves on roses and how to solve these problems in a simple and effective way.
Yellow Leaves on Roses Due to Pests and Diseases
Most pest attacks, such as spider mites and some fungal diseases, are aimed at taking the sap from the rose bush.
If the sap does not circulate well, the rose does not photosynthesize and the leaves turn yellow.
Therefore, one of the reasons why a rose bush may have yellow leaves is due to a plague, either by insect attack or by fungal attack. You should use the same organic fungicide that we use in our garden (Order it here).
It is common that when we notice that the leaves begin to change color, are becoming paler, or are already yellow, it is because the pest is in an advanced process.
When a rose bush is being attacked by a pest, we must intervene quickly to prevent it from spreading to the rest of our plants, and to stop the deterioration process as soon as possible.
Yellow Leaves on Roses Problems with Watering
Water is an indispensable complement for the life of plants, a lack of water will cause the leaves to yellow and eventually fall off.
However, an excess of water has a similar effect, since when there is an excess of water in the roots of the rose bush, we provoke root asphyxia.
Through the roots of the rose bush, it not only acquires the nutrients present in the soil but also needs to absorb water and oxygen.
If watering is excessive, the roots cannot absorb the oxygen present in the substrate, causing them to suffocate.
Either of the two problems, the lack or the excess of water are easy to solve, we only need to be clear about the real cause, because we already know the consequences: yellow leaves on roses.
Deficiencies in The Nutrients Present in The Soil
Another cause of yellow leaves on roses is that it does not get the necessary nutrients from the soil, or they are not present in the right proportions.
The pH of the soil may be too high (alkaline), or the necessary nutrients are not present: iron, manganese, or zinc.
The solution is to add the nutrients that the rose does not find in the soil, either by foliar application (spraying the leaves) or through soluble products in the irrigation water. We recommend this product to give the necessary nutrients to your roses (Order it here).
If the problem is due to the pH of the soil, the ideal is to correct it by applying soil improvers.
Problems with Plant Lighting
Chlorophyll is a green pigment, which is very important in the chemical process by which plants absorb energy through sunlight.
When we are faced with a rose bush with yellow leaves, it is because photosynthesis is being interrupted. If the plant is not fed, it weakens, is susceptible to a greater number of diseases, and, finally, dies.
To solve this problem, we must ensure that the rose bush receives enough light to photosynthesize properly.
If you have the problem of yellow leaves on roses due to lack of light and you can’t have it outdoors in sunlight, you may want to invest in one of these grow light kits (Order it here). They are a little expensive but last for many years and are suitable for all plants in the home.
Heat Stress in Roses
Yellow leaves on roses can be caused by some kind of stress. The most common cause is heat stress, as the rosebush tries to cool itself by dropping its leaves. The rose will react to the stress by dropping its leaves.
Another problem is that the mulch we have is too dark and it reflects the heat directly on the plant and is too strong. The solution is to place a lighter-colored mulch to avoid heat reflection (Order it here).
We hope you have found the cause of yellow leaves on roses so that you can solve your problem and your rose will grow healthy and strong.