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Every plant has different soil needs; there isn't one type of soil that is the best for all plants.
because plants use the soil and the plant puts other things in the soil
Good organic soil is best for most plants. But some plants prefer sand or rocky soil. Do some research to see what your plants prefer.
There are many things a plants roots do for an ecosystem. Plants roots help prevent erosion of soil for example.
Plants get the nutrients they need from the soil or air, depending on the type of plant.
Plant life is dependent on soil because plants are rooted in the soil and get their life-sustaining nutrients from it.
Generally, most plans grow roots in the top 12 inches of the soil, e.g. the topsoil layer is the most important
Plants roots
Plants roots
Plants roots
The type of soil a plant needs, depends on the plant i.e. some plants may need lots of water while other plants don't. The better the soil matches the plant, the better the plant grows. If the soil's not good enough for the plant, the plant may die or grow smaller and slower. When purchasing a plant make sure to read the tag or an other accompanying information to see what environment it grows best in. Some plants need a loamy, neutral Ph soil while others need a well draining sandy soil.
Some plants don't mind clay soil. But many plants do not. They get too much water around the roots and rot.