Newly planted crepe myrtles, about 20-25 foot tall, with plenty of sun and water, have leaves that appear to be "curling and sort of looking a bit yellowing". New housing addition with very poor soil; however, myrtles were planted properly by a nursery with proper soil and are mulched, with a berm around both of them. No buds or blooms but I did not expect any this year. I am concerned about the yellow leaf coloring.
Certified GKH Gardening Expert
Your trees are in shock. Newly planted trees need lots of water for the roots to establish. These articles should help: https://www.gardeningknowhow.com/ornamental/trees/tgen/watering-newly-planted-tree.htm, https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm