University of Florida

Soil pH

The pH of a soil is the measure of its acidity or alkalinity. Essential plant nutrients like iron become more or less available depending on the soil pH. So your soil's pH can affect the health of your plants.

To determine your soil's pH, bring a soil sample to your county Extension office for a soil test. Once you have the results, you can choose plants that are adapted to your conditions. Most plants do best in a slightly acidic soil, but some, like blueberries and azaleas, prefer strongly acidic soils.

It's also possible to alter the pH of your soil by adding supplements like lime or sulfur. But the effects may be temporary, and applying too much lime or sulfur can damage your plants.


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