I have photographed the Indian Paintbrush at Illinois Beach State Park for a number of years. There was an area that was all yellow paintbrush.
And there was an area in a different location of all red paintbrush.
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This year there were a lot of flowers and they seemed to have mixed together.
This created a different color. They were kind of orange, kind of salmon colored.
Here you can see the yellow and red combined. Oh the fun of it all.