To grow acid-loving plants such as blueberries and azaleas, or make naturally alkaline soil suitable for growing most vegetables, you'll need to adjust your soil pH with soil acidifiers and other ...

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.