I would have wrote that usually you can estimate the Ph by what brakes down on the surface that over time with rain what goes into the soil. HOWEVER, you live in Texas, so have no clue if you even have a "Fall" as we do up north. there are two basic droppings that happen up here that is general leaf from trees which cause a higher acid soil and pine needles which is also a different Ph for the soil. Now if you want to use something to counter act acid (if you find the is what it is) then use a lime dust on the ground. Lime in a sleeping garden patch over the winter is good to sweeten up veggies for later the next summer, you just leave nature let it seep in naturally over the winter and snows or rains. but again you live in Texas. I live up in PA.