pH is an indicator of how acidic or basic a solution is.
pH value ranges from 0-14.
A solution is acidic if pH lies between 0 & 7 and basic if it’s between 7 & 14. With 7 being neutral.
A pH of 5.5 - 6.0 is good for growing leafy vegetables like spinach, lettuces, coriander, basil, amaranth, f...