Blue Hydrangeas ~ how to get and keep those blue blooms!
Did you fall in love with a beautiful blue Hydrangea and plant it in the garden, only to have it bloom purple or pink the next year? There’s a fix for that! Acidify your soil using Aluminum Sulfate. Understand that it is only Bigleaf Hydrangeas (Hydrangea macrophylla) that you can change and some hybrid varieties