This post may contain affiliate links. If you make a purchase using one of these links it means we may earn a small commission at no extra cost to you. Learn More

Green Bean Leaves Turning Yellow: Causes & Fixes

Green beans are one of the most popular plants in the whole world, and they are definitely one of the favorite vegetables that are worth planting.

Based on some reasons, you may have some “issues” with green bean leaves, and the main one is the decoloration of leaves and them turning yellow. Well, that’s basically the main topic of this article, in which I will elaborate in detail on the reasons that may cause the yellowing of leaves in green beans. Stick until the end in order to also find out the ways on how you can deal with those problems!

Now, without further ado, let me get this article started!

Why Are My Green Bean’s Leaves Turning Yellow?

Yellow leaves on green beans are considered a sickness that many of these plants have to deal with, but lucky enough I have the reasons why it may happen. Let me just say that they are based on your job and the place where they are planted at.

The main reasons why your green bean’s leaves turn yellow are the sunlight, the too crowded place, temperature, pests, and also the watering procedure.

Let us see how the things mentioned have an effect on the green beans and turn their leaves into yellow color!


Green beans are one of the plants that love the sun and its light all the way and in the best way. They are known as plants that can never live without light, and basically, that is one of the first reasons why their leaves may turn brown. Just because of the lack of sunlight!


Just like many other plants, both overwatering and underwatering can happen quickly in green beans as well. You should be super careful with the watering routine of these plants, as the things mentioned not only cause brown leaves but also may cause leaves to fall off the plant entirely.


You may have seen green beans planted super tightly next to one another, and let me say that it is the worst thing that one can do! It is related to the roots of the plant being next to one another and the leaves get in a super crowdy environment with one another. If they are like that, they cannot stop but have some yellow spots on the leaves, in order to show you that they are not feeling fine in the crowd.

I cannot really blame them though, who loves crowded places? 


I personally don’t like it when insects come at me and stand on my hands, and I bet many people feel a bit bored by them. Well, green beans don’t like them either! Insects in green beans, otherwise called pests, are one of the main reasons why the leaves quickly turn yellow.


Just as the sunlight mentioned in the first one, beans have a requirement for temperature as well. It is important to know that they can stand a little bit hot weather but not cold in any way, and whenever they find themselves in a super cold temperature, they show it with the symptom of yellow leaves.

How to Prevent Green Bean Leaves From Turning Yellow?

Now that you know the reasons why green beans leaves may turn yellow, an important thing to mention is the ways how to deal with them or simply said, the prevention. There are a few things that you can do, and I will mention them in more detail, and tell you all those requirements!

Causes Things To Do (Solutions)
Sunlight Green beans love sunlight and they can stay in a direct one from six to eight hours. It is one of the most important things that would help you grow the most amazing green beans.
Water A green bean plant wants about two inches of water per week, meaning that it should be watered daily. Something to mention is that it would be better if you water this plant during the early mornings.
Crowd This type of plant loves its own space and in order to avoid crowding and yellow leaves, you should have in mind that when planted they should be put at a distance from 8 to 12 inches (20 to 30 cm) in order to let the air move in between.
Pests Dealing with green bean pests isn’t the easiest thing in the world, but something that you can do is to use insecticidal soap or any other herbicide that will only damage the pests and not the green bean plant as a whole.
Temperature The plant of green beans loves a temperature from 65°F (18°C) to 85°F (29°C) and they grow perfectly at these degrees. There is a temperature requirement for the soil as well and it stands at 55°F (12°C).

Final Words

Here we came at the end of this article, which I hope was understandable for you who read it! It is important to mention that green beans have some interesting requirements and basically they are plants that love hot times, and not cold ones. I would also like to mention that if you do the things that I mentioned in the table added above, your green bean plant will stay healthy enough to produce the most amazing beans that you have ever seen!

I really hope that this article will be your biggest helper if any of you have doubts when the leaves on your green bean plant are turning yellow!

Further Reading

Those that know me and have read some of my articles, know that I cannot leave without mentioning some other articles that I have already written!

Since in this article I talked about green beans, I think that it is quite important to know how many green beans any of you can expect from just a plant and thinking about the fact that black beans are also some people’s favorite, I would also like to mention the number of black beans that you can have per plant!

If your green beans are in good condition, but your azalea plant is a little bit sick, you can find out why azalea’s leaves turn brown!

Check them out, and stay tuned for more!

Ella Holmes

About Us

FlowerPictures is a website dedicated to the most beautiful things in life - PLANTS!

Its run by enthusiast gardeners that have years of experience.