When you’re growing outdoors, having a good air circulation is your best defence against heat. In case there’s no breeze make sure you use a combination of fans to create a gentle breeze which will help ensure that all the heat that is being accumulated gets dissipated. You will also need to protect the plant from excessive heat by sometimes pulling up a canopy so that the plants don’t get burnt. Sprinkling water around the growing area will also help create a colder environment for your plants.