Leaves curling on cayennes

[Alan]

Growing some cayennes and they're growing fast! But noticed that the leaves are curling inward. Could it be heat stress or something else?

 

[gianluca_07]

Saw the same leaf curl before. For me, it was heat stress combined with a bit of under watering. Once I gave them some afternoon shade and kept the soil evenly moist, the leaves perked up. You can try that too!