Q.Crimson Fire Loropetalum
I have about 17 Crimson Fire Loropetalum plants that are about 3-4 years old. Located in zone 7, they get full sun most of the day. My problem is all but about 3 have lost their color. Three are the deep burgundy; all others are very light pink (some almost white) and/or green. I’ve fertilized with organic fertilizer recommended by the nursery. They said they would begin turning darker within days but the opposite is happening. The three that are the correct color are intermingled with those that are light. Quite random. I’m ready to dig them all up but I know they would look beautiful if I could just get their color to return.
This loropetalum thrives in full to part sun and is adaptable, but prefers slightly acidic, moist but well-drained soil. Water thoroughly when planted. Provide a deep watering once or twice per week until established. Once established are fairly drought tolerant and only need water during dry spells.
https://www.gardeningknowhow.com/ornamental/shrubs/loropetalum/loropetalum-shrubs.htm
Add 2-3 inches of mulch when planting. Mulch will protect the roots in extreme temperatures and keep the soil moist. Fertilize in spring with a slow release, balanced fertilizer.