Hydrangea macrophylla (Bigleaf Hydrangea): This variety is most commonly affected by soil pH. It includes both Mophead and Lacecap types. The color change is most dramatic in these hydrangeas.

If you've always wanted pink and purple French hydrangeas but your plants stay stubbornly blue, try this soil amendment ...

Hydrangeas are a garden favorite. Blue hydrangeas are in the same category as whale watching - elusive and spectacular. There are a few things we need to do to have blue hydrangea blossoms. First we ...