Try putting a plastic bag loosely over each of them for a few days. If you've had hot/dry weather their root systems may not be handling the stress. Also, if they are in full/ mostly sun you may want to provide them some shade for a week or so. A lot of times the nursery has them in a shadier area and then you zap them into full sun... it can take a little getiing use to.

Thanks for your suggestion! I will try it!

Don't put plastic bags over them in the sun,- they will fry. Keep watering and they will adjust in a week.
Jane