What is soil moisture? Soil saturation? Wilting point? What is soil moisture? Soil saturation? Wilting point? Soil saturation? Wilting point? Solution Soil moisture- water held by soil in space between soil particles is called soil moisture. Soil saturation - when soil absorbs water or other eliments at the point where further added water or eliments can not be absorbed by soil ( maximum absorption point). That point is called saturation point of soil. Wilting point- wilting point is the minimal point of soil moisture required by plants not to wilt.if soil moisture decrease at this point or lower than this point plants wilt and no longer recover it turgidity..