Tomato Leaf Curl
I recently planted four tomato plants I purchased at a local nursery in my garden. As of yesterday, I have noticed some upper leaf curl on one of the cherry tomato plants I purchased, and am not sure what is causing the curling. I've read the cause of the curling could be from the recent planting (2-4 days ago) or due to the excessive 90+ degree heat I've been experiencing in my area for a few days now. The plants receive ample sunlight each day, along with being watered twice a day. Please advise if you may have any idea or can reaffirm that the leaf curl is caused by the exceptional heat or the transplant. Picture is attached below, thank you in advance!
Here is a link that might be useful: