Question: Our vegetable garden shows too high levels of pH (7.3-7.5) in all the beds and rows according to soil samples processed by UMaine Extension. We began to establish the garden nearly 50 years ago on a glacial moraine. The soil type us predominantly Naumberg Sand and Gravel. The advice from UMaine Extension was to read more What form of sulfur should we add to our vegetable garden to decrease the pH level?