If you're a gardener, you'd very well know what soil pH is and what difference will it make when you decide to grow a plant on the soil that has acids or alkaline. Like the organic matter wood ash and ashes, the soil has hydrogen ions concentration too. After deciding what kind of plant you want to grow, you’d need to know the hydrogen ions concentration of the soil to determine if your plant … [Read more...] about What is soil PH and what do they mean to you?