To determine the acidity of the soil in your area, just look at those plants that you grow. After all, each type of acidity corresponds to a certain vegetation cover. For example, acidic soil, which contains a large amount of moisture, will be ideal for the growth of meadow cornflower, sedge, horsetail, sorrel, potentilla. Drained and slightly acidic soil is more suitable for the growth of Leucanthemum, alfalfa, coltsfoot, clover and burdock. Compacted, mineral-poor soils will be a haven for plants such as field mustard, thistle, goose foot, euphorbia, chamomile and clover. The fertility of the land can be determined by the presence of nettles, woodlice, quinoa, and sow thistle.Horsetail
If you need to determine acidity more accurately, litmus paper is recommended. Take a few handfuls of the earth, fill it with rain or distilled water and stir until the earth turns into liquid porridge. Wait fifteen minutes and mix again. Five minutes later, a liquid forms on top of the pulp, to which litmus paper is to be applied. If a piece of paper turns red, then the soil acidity is high and is at a level above pH 5.0. If the litmus test has acquired an orange tint, then the acidity is average and is at pH 5.1-pH 5.5. The yellow litmus test shows a slightly acidic composition, the acidity of which ranges from pH 5.6 to pH 6.0. A greenish piece of paper will indicate neutral soil. The bright green color of the litmus test means that the soil has an alkaline composition with an acidity of pH 7.1- pH8.5.
If you want to grow vegetables, you need to plant them in neutral soil, which will be most optimal.Long Ribbon Litmus Paper (Indikatorpapier)