Though gardeners can’t see it, soil pH (acidity or alkalinity) is an important contributor to the health (or demise) of plants. The high availability of some nutrients in acidic soil can actually harm ...

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.

Purdue Extension Educators frequently encourage homeowners to get soil tests when they want to grow new plants in an area, or try to diagnose what’s wrong with plants currently growing. One key ...