Most of my hydrangeas are blue, and my neighbor's is this beautiful combination of red, blue-purple, and a mix of the 3 colors all on the same bush. She hasn't done anything to it. How can I make mine do the same thing?
Certified GKH Gardening Expert
This article has information about changing hydrangea colors: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/change-hydrangea-color.htm