They need watered and mulched, 3-4 inches, close to, but not against stems, to prevent this. Water from the base of plant, rather than overhead, so they don't sunscald.
Thankyou for your input. I’ll let you know the results.
And yes the discription is scalded.
I've experienced this, myself. It was very disheartening, so I'm glad to be of help😊