27. Test the soil in many places
Besides acidity and alkalinity, it is necessary to perform numerous tests on the soil to determine its overall composition and health. Nitrogen, phosphorus, and potassium levels provide valuable insight into how much fertilizer you'll need throughout the growing season, but the pH level will do the trick.
Testing in at least a few areas if you want to grow vegetables to make sure your soil is uniform. If it's not the cause, fix it through soil amendments like fertilizer, sand, coffee grounds, etc. It's a good idea to do a lot of experimentation with large landscaping projects to ensure that all of your different plants are healthy.