You can test your own soil! Take two separate cups and add your soil sample to each. In one add vinegar and the other add some water, stir and add baking soda. If nothing at all happens your soil is some what PH balanced.
Tips for growing Hydrangea Hydrangea are one of my favorite shrubs. I ran across a great article on taking care of them at the Farmers Almanac. Here’s a link to their site if you want to see … - Flower Gardening