Plants grown in soil need the right combination of soluble salts and nutrients to grow and flourish. Trees, plants and shrubs take out butrients from the soil which if not properly replenished cause soil deficiencies resulting in stunted growth and unhealthy plants. Test pH, nitrogen (N), phosphorus (P), and potassium (K) and the range of pH in which it thrives. The ability of plants to asborb nutrients also depends largely on the pH value. Testing the correct quantity of nitrogen allows a healthy growth of the entire structure, while correct phosphorus levels contributes to the formation of bulbs, roots and blooming, and potassium plays an important role in how much water is absorbed by the roots and makes plants resistant to dieases. Wtih Hanna. Bluelab, and Rapitest instruments testing your soil, you can ensure that your plants are in tip top condition and prevent stunted growth or unhealthy vegetation.