It is important to know this as there are some nutrients which could only be accessed by plant if the soil pH is suitable for its growth. Some plants which would thrive best in acidic soil include potatoes, peppers, tomatoes, peas, onions, beans, blueberries, blackberries and most flowering plants, garden plants and evergreens. There are plenty of things that you can do.

Soil pH is generally measured using a scale of 1 through 14, with 7 being the neutral mark. Soil pH basically serves as a gauge or measurement of the soil's hydrogen ion concentration.

Most plants grow best in slightly acidic soil which has a pH of about 6 to 6.8, as this is the pH range which makes sure that the soil nutrients are readily available. Soil pH can be determined using home testing kits or through sending samples to laboratories which provide such services. If the soil is below 7, it is considered acidic and if it is above 7, it is alkaline.

One of the most important things that you need to consider when gardening would be the soil you are using and its alkalinity or acidity or its pH.