If the beans develop yellow leaves, this is usually a cause for concern. However, the causes that can be behind leaf discoloration are very diverse. Find out the possible reasons for yellow leaves on the bean below.
Why do beans get yellow leaves?
Yellow leaves on beans can be caused by too much or too little moisture, disease infestation (e.g. bean mosaic virus), pest infestation (e.g. B. spider mites) or too much or too little sun. Examine the plant and surrounding area to determine the cause and act accordingly.
Why do the beans get yellow leaves?
There can be various causes behind leaf discoloration, for example:
- Too much or too little moisture
- Disease infestation
- Pest Infestation
- Too much or too little sun
Too much or too little moisture
Beans, like most crops, like it neither too dry nor too moist. They often react to drought with dry, brown-yellow leaves; too much moisture can lead to root rot or fungal infections, which also result in leaf discoloration.
Disease infestation
Yellow leaves are one of the symptoms of the dreaded bean mosaic virus. As the disease progresses, mosaic-like patterns appear on the affected leaves, which also bulge and twist. Diseased plants should be removed immediately.
Pest Infestation
Even if a bean plant is infested with spider mites, it reacts with yellow spots. This infestation is easy to recognize because the spider mites form web-like structures on the underside of the leaf. The animals can be easily removed with water and detergent if used several times.
Too much or too little sun
Beans need sun, otherwise the harvest will be sparse and the bean will not grow properly. However, the bean can also get sunburned if there is too much sun. The result is brownish yellow spots on the leaves. Don't worry, too much sun will not cause lasting damage to your bean plant.
Exclude causes
To find out the cause of the yellow leaves on your bean plants, you should proceed according to the principle of exclusion: Examine your bean for pests, none there? Then look at the earth. Too wet, too dry? No? Then maybe the sun? If none of this fits, look for pictures of diseased bean plants online and compare them with your plant. Eliminate any errors before removing the plants.