How to Get My White Hydrangea to Turn Blue or Pink
I have a large white hydrangea plant that is very healthy. I give it Hollytone for acid and fertilizer annually. I've tried planting copper pennies by the roots to see if the flowers will turn colors. Is there any surefire way of getting this hydrangea to turn blue or pink? This white plant that I have does have different leaves from a smaller blue hydrangea that I have on the other side of the house. Possibly I have a white variety that can only have white blossoms.
Certified GKH Gardening Expert
Your hydrangea isn't going to change. White hydrangeas aren't dependent on soil acidity for their color. Sorry.