Ask Gardenerd: Make my Hydrangea Blue
I think we've all asked this question at least once in our gardening lives: "What do I have to do to make our light pink hydrangea to blossom blue. Everyone has different opinion on this subject, your help is very much appreciated. Thank you, Ana" Good question, Ana, and there are several answers, all arriving at basically the same solution: You need to lower the pH of your soil in order for hydrangeas to flower blue instead of pink. Now,…