Apply agricultural lime
Use dolomitic lime if magnesium is also needed
Mix finely ground lime into the soil
Test soil before and after application
Apply wood ash sparingly
Use calcitic limestone for calcium without extra magnesium
Add crushed oyster shell or shell flour
Use baking soda only for small, temporary pH adjustments
Reduce use of acid-forming fertilizers
Incorporate composted organic matter
Water with low-acidity water if needed
Recheck soil pH regularly