What causes a hydrangea bloom to change color? The change in the color of the flower’s bloom is to do with the pH level of the soil and the amount of aluminium that’s present. The deep blue is ...

Impressive yet cozy–hydrangeas add a unique charm to the garden. The deciduous, woody garden hydrangeas are especially popular for their colors. But what does it mean when the shrub loses them? The ...

There's even an annual hydrangea festival. Coming in a variety of colors including blue, green, pink, purple, red and white, depending on the type, the hydrangeas are particularly vivid this summer.

Bigleaf hydrangea responds to several light applications of fertilizer during the growing season. A general-purpose fertilizer, such as 8-8-8 or 10-10-10 applied at a rate of 1 pound (2 cups) per ...

Since most of our soil is acidic, these hydrangeas naturally are blue. To gradually change flower color from pink to blue, broadcast one-half cup of wettable sulfur per 10 square feet and water.