Students will discover that plants need an adequate amount of nutrients to grow and stay healthy. Plants uptake nutrients from the soil, so it is important to test soil regularly to determine if there are enough nutrients to support plant growth. The soil test kit will help students identify whether soils in their garden, yard, park, etc. are fertile or deficient in nutrients. Keep in mind that all plants need nutrients, but requirements vary depending on the type of crop, shrub, tree, etc.