Mid-Atlantic Gardening: FIRST FLOWERS ALMOST SUMMER 2015, 1 by coleup

coleup wrote:
A favorite combo: Blue Billow Hyd and variagated Red Twig Dogwood

To Change Colors:

* To turn flowers purple or pink, add lime to the planting area & reapply twice a year.
* To deepen blue color, add Aluminum sulfate once a year.
* To maintain a specific pH, test the pH twice a year using a soil test kit.
* White hydrangea color cannot be manipulated with soil pH.

pH Flower Color

* 4.5 deep, intense blue
* 5.0 medium blue
* 5.5 lavender-purple
* 6.0 pink-purple
* 6.5 mauve-pink
* 6.8 medium pink
* 7.0 intense, deep pink