Answer: Most Blue Hollies have new foliage that emerges as a bronzed light green, quickly maturing to a dark waxy blue-green and persisting for about three years on the stems. 'China Boy' and 'China Girl', however, have kelly green foliage and chartreuse stems so my first concern is that the holly in question is not Nellie Stevens. The only other thing that might affect the leaf color is the acidity of the soil where that one holly is planted. Test the soil, or have it tested, to make sure it is acidic (5.8 to 6.2 is ideal for hollies). Wish I had other suggestions but without being able to closely examine the plant, I'm at a loss to suggest any other possible causes. Best wishes with your hollies!
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