The Reblooming Mountain Hydrangea that was planted along the stroll garden is really adding a pop of color to the garden. I did not expect such a dramatic change.
Apparently with some changes to the pH one can change the color of the flowers. For instance, for blue or purple blooms, one can lower the pH to be acidic (5.5 or below) by adding aluminum sulfate of sulfur.
I didn't take any steps to make this happen. The sandy soil we have, along with the mulch covering seem to already have an acidic nature.
If I want pink or red blooms, I can raise the pH to be alkaline (6.5 or above) by adding lime. However making such changes could take some time. Honestly, I like the blue-purple look and hope to keep theses colors consistent over time.
The Stroll Garden looks fantastic and I am very happy with the new look.
