Although soil may seem rather solid, spaces exist between soil particles. These spaces hold vital air and water necessary for the plant roots system. Root survival is dependent upon absorbing oxygen from these air spaces in the soil. Spring rains fill the spaces in the soil with water, and the air is displaced. Gravity pulls on the water and it moves downward allowing the air to move back into the spaces. Too much water/rain saturates the soil which deprives the roots from the oxygen they need. Over time this will stop roots from functioning properly, make them susceptible to root rot infections and eventually lead to their death.