The most common reasons that you notice tomato leaves curling up are due to environmental issues . That might mean that your tomatoes are exposed to too much sun or facing hot temperatures. Tomato leaves curling up also could be caused by too much wind, adding stress to your plants.
You may be thinking “Why are my tomato leaves curling?”
Some articles claimed Environmental stress is the most common reason for tomato leaves to curl. Tomato leaves certainly curl from drought stress , but they can also curl if the plant gets too much water. Hot temperatures can cause tomato leaves to curl.
Some sources claimed curling tomato leaves may also be triggered by just the opposite—uneven watering, high temperatures, and dry spells. Leaves will curl upward to conserve water but they do not take on the leathery-like appearance. Plum and paste varieties are most commonly affected.
Another thing we asked ourselves was: what does it mean when tomato leaves curl up?
An answer is that curling tomato leaves may be a sign of a viral infection . Normally this virus is transmitted through whiteflies or through infected transplants.
You may be wondering “When tomatoes leaves curl upward?”
When it’s too hot for the tomato plant (in the high 90 degrees Fahrenheit ), the upward leaf curl is a survival technique because it reduces the surface area, lessening the amount of water that can be lost to transpiration.
Another popular question is “Will curled tomato leaves un-curl?”.
The most common answer is; in short, curled tomato leaves will not un-curl . However, new foliage can be improved by adjusting plant care routines. The curled leaves don’t need to be removed, as they can still contribute photosynthetic energy.
Why are my leaves curling up?
As you can see the lower leaves are starting to curl upwards but just on this one plant. It’s also common for leaves to curl downwards as seen here. Ok so now we have identified what leaf curl is it’s time to look for the possible cause and treatment. If the leaves curl down then this may indicate root rot .
Our answer is that the stress created by these conditions is thought to cause the leaves to curl inwards. While overwatering is a potential cause, other symptoms are likely to present themselves long before the leaves begin to curl. Underwatering is the far more likely cause.
Is there a cure for tomato leaf curling?
Although physiologic effects for tomato leaf curl do not affect the overall growth or crop yields of plants, when the tomato leaf curling is due to a viral infection, removal of the infected plants is necessary .
You might be wondering “What is the difference between tomato leaf curl and pinworm?”
One answer is the difference is that the Curly Top Virus only causes leaf curl on the top leaves. Tomato pinworms will cause an upward curl on every leaf they feed on from the base of the plant up. Unlike with leaves curling upwards that’s caused by heat stress, Curly Top Virus causes leaf discoloration, too, and new growth becomes leggy.
How to diagnose tomato yellow leaf curl virus?
To confirm tomato yellow leaf curl virus, submit plant samples to the Texas Plant Disease Diagnostic Laboratory (http://plantclinic. tamu. edu). Pull up and dispose of diseased plants. They key to solving the problem of twisted or curled leaves is to identify the source or sources of the problem.
Why are my tomato plants leaves turning yellow?
Yellow Leaves On Tomato Plants In Containers It’s more common to see tomato plant leaves curling when the tomato plants are in containers. This is mainly down to the following reasons: Insufficiently Sized Container – Look to re-locate to larger sized 1to 2 square feet.