Q.Why Do My Blue Maid Hollies Look Different?
I purchased approximately 30 Blue Maid Hollies and planted them last of Spring 2019, this year they’re starting to blossom but I noticed about 10 of them are a lighter green and the rest are a nice rich blue green. Did I get tricked and sold different hollys? Or are they all the same just not getting the same nutrients?

Certified GKH Gardening Expert
It is most likely a nutrient issue, namely Iron. They may be lacking the nitrogen necessary, or the pH of the soil could be too high, as well.
These articles will help:https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-yellow-leaves.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm