Many gardeners wonder if vinegar can be used to adjust the pH of soil in outdoor plant boxes. The answer is yes, but with caution. Vinegar, particularly white vinegar, is acidic and can lower soil pH, making it more suitable for acid-loving plants like blueberries or azaleas.

To use vinegar safely, mix 1 cup of white vinegar with 1 gallon of water and apply it sparingly to the soil. Test the soil pH before and after application to avoid over-acidification. Overuse can harm plants and beneficial soil microbes.

For a more balanced approach, consider combining vinegar with organic matter like compost, which buffers pH changes. Always monitor plant health and adjust your method as needed. While vinegar is a quick fix, long-term soil health relies on sustainable practices.

Remember, vinegar is not a substitute for proper soil testing and tailored amendments. Use it as a temporary solution while exploring other natural pH-adjusting methods for your outdoor plant box.