How Do I Make My Hydrangeas Blue? [Solved]
Hi, iam Tiffany Hunter, I hope today is better than yesterday. How Do I Make My Hydrangeas Blue? [Solved] The easiest way to acidify your soil and turn those babies blue is with aluminum sulfate, which can be found at almost any garden center. Mix ¼ oz aluminum sulfate with a gallon of water and soak the soil surrounding your hydrangeas in the spring, as soon as the plant begins to grow....