A viscous, gelatinous substance produced by certain plants, seeds, and microorganisms, composed mainly of polysaccharides that swell and become slippery when hydrated. In gardening contexts, mucilage is commonly released by seeds such as chia, basil, and flax when they come into contact with water.
This coating can help retain moisture around the seed, improve contact with the soil surface, and protect against desiccation during germination. In some cases, mucilage also aids in seed adhesion to soil particles, which can stabilize seeds in place and reduce displacement by water or wind.
Mucilage is distinct from sap or latex; it is not involved in nutrient transport but functions primarily in hydration and protection at the seed or tissue surface.
See Also
