What to Do If Your Phlox Leaves Are Curling

If you have noticed that your phlox leaves are curling, don’t worry – you’re not alone. This is a common problem for phlox plants, and there are a few things that you can do to correct it. In this blog post, we will discuss the causes of leaf curling in phlox plants, and we will also provide some tips on how to fix the problem.

Why Are My Phlox Leaves Curling?

Overwatering, underwatering, extreme temperature changes, stress, or soil that is the wrong pH level might all cause the leaves of a phlox to curl up. These issues might also cause the leaves to turn yellow or brown, and they might cause the plant to wilt.

The exact type of leaf curling that you see on your phlox plant will depend on the underlying cause of the problem. For example, if the leaves are curling due to overwatering, they will typically have a wilted appearance and they will be soft to the touch. On the other hand, if the leaves are curling due to underwatering, they will usually curl inwards and they will be crisp to the touch.

1. Too Much Water

Overwatering is one of the most common causes of leaf curling in phlox plants. If you think that your plant is being overwatered, check the soil to see if it is wet or dry. The soil should be moist, but not soggy.

The best way to do this is to stick your finger into the soil and see how moist it feels. If the soil is very wet or soggy, then you are probably giving your plant too much water.

To fix this problem, you will need to cut back on the amount of water that you are giving your plant. Make sure that the soil has a chance to dry out completely between watering sessions, and only water your plant when the top few inches of soil are dry to the touch.

If you’re not sure how often to water your plant, err on the side of caution and water it less often rather than more. It is much easier to correct underwatering than overwatering.

2. Not Enough Water

If your phlox leaves are curling inwards, it is probably because the plant is not getting enough water. This problem is typically caused by underwatering, but it can also be caused by drought conditions or soil that has a high clay content.

The leaves curl inwards because the plant is trying to conserve water. The more closed the leaves are, the smaller the surface area there is for evaporation.

The best way to fix this problem is to make sure that your plant is getting enough water. Water your plant deeply and regularly, making sure that the soil is moist but not soggy. You might need to water your plant more often during hot weather or if it is growing in a pot.

3. Extreme Temperature Changes

Extreme temperature changes can also cause the leaves of a phlox plant to curl. If the temperature fluctuates frequently or if it drops suddenly, the plant can go into shock, and this can cause the leaves to curl.

To fix this problem, try to keep the temperature around your plant consistent. If possible, avoid placing it in direct sunlight or in a drafty area.

You can also protect your plant from extreme temperature changes by covering it with a light cloth or placing it above ground. This will help to insulate the plant and keep the roots warm.

4. Shock

Shock is often caused when a phlox is transplanted from one location to another. This can be particularly stressful for the plant if it is moved outdoors during the winter months.

The best way to avoid shock is to transplant your phlox in the spring or summer when the weather is milder. If you must transplant your plant in the winter, make sure that you do it gradually so that the plant can adjust to its new surroundings.

You can also help to reduce the stress on your plant by keeping it well-watered and protecting it from extreme temperature changes.

Will Underwatering Cause Phlox Leaves to Curl Inwards?

Yes, underwatering will cause phlox leaves to curl inwards. This is because the plant is not getting enough water and it is starting to stress. The leaves do this to conserve water and stop themselves from drying out.

In fact, curling inwards creates a mini greenhouse effect. By curling inwards, the leaves are able to trap moisture and heat. This helps the plant to conserve water and survive in a dry environment.

Should I Prune Curling Phlox Leaves?

No, you should not prune curling phlox leaves. This will not fix the underlying problem, and it might actually make the problem worse. For example, if the leaves are curling due to stress, pruning them will only add to the stress.

I would advise fixing the issue that is causing the leaves to curl, and then giving the plant some time to recover. Once the plant has recovered, the leaves should return to normal.


In conclusion, if your phlox leaves are curling, it is probably due to one of four reasons. The first reason is that the plant is not getting enough water. The second reason is that the plant is experiencing extreme temperature changes. The third reason is that the plant has been transplanted and is in shock. And finally, the fourth reason is that the plant is stressed.

The best way to fix this problem is to figure out what is causing the leaves to curl and then take steps to fix that issue. For example, if the plant is not getting enough water, you will need to water it more often. If the plant is experiencing extreme temperature changes, you will need to protect it from those changes. And if the plant is in shock, you will need to give it time to recover. Once you have fixed the underlying issue, the leaves should return to normal.

I hope this article was helpful. If you have any further questions, please feel free to leave a comment below. I will be happy to help!

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