Bloom color is generally controlled by soil pH and aluminum availability. Only certain hydrangeas can change color, and some cultivars will stay white no matter what you do to the soil. Color shifts ...

Hydrangeas are exceptional in that the color of their flowers can change depending on the availability of aluminum ions.

With vibrant green leaves that transform to magnificent shades of red in the fall, this low-maintenance hydrangea variety offers year-round appeal.

Don't just look to autumn flowers and gorgeous leaf-changing trees for fall foliage. There's a variety of hydrangea that will ...