gen-briefly-explain-soil-ph-and-amendments-and-one-common-miscon-18f0

Briefly explain soil pH and amendments and one common misconception about it.

# Soil pH and Amendments **Soil pH** measures acidity/alkalinity on a 0-14 scale (7 is neutral). Most plants prefer 6.0-7.0, where nutrients are most available. Below 6 is acidic; above 7 is alkaline. **Amendments** adjust pH: - **To raise pH (reduce acidity)**: Add lime, wood ash - **To lower pH (increase acidity)**: Add sulfur, peat moss, pine needles ## Common Misconception **"Adding coffee grounds significantly acidifies soil"** While fresh coffee grounds are slightly acidic, *used* coffee grounds (what most gardeners add) are nearly pH neutral (6.5-6.8). They won't meaningfully lower soil pH. For real acidification, you need elemental sulfur or sulfur-based amendments. The confusion arises because coffee itself is acidic, but the brewing process removes most acids, leaving behind grounds that have minimal pH impact.