The vast majority of flowers, perennials, vegetables, and fruits grow well in a neutral soil pH between 6.2-7.0. But some species – or more precisely, some varieties of those species – require an acidic soil for optimum growth and health.
What pH is considered an acidic soil?
pH is the measure of how acidic or alkaline your soil is: 7 is neutral; lower numbers are more acidic, and higher numbers are more alkaline.