Plants need the correct pH (acidity/alkalinity) level which controls how well plants utilize the nutrients available in your soil. All plants have a pH preference, so it is important to know the pH level of your soil. You can then choose plants with the same pH preferences, avoid those that will not do well in your soil, or know how to go about supplying their special needs. By testing your soil, you determine its condition so that you can adjust pH more accurately, effectively and economically. This easy-to-use soil pH kit will help you obtain all the pH information you need to be more successful in your home garden.