Botanists often define rhizomes as a horizontal stem from which many shoots, buds, and roots grow from nodes. Rhizomes, or rootstalks, are known to spread rapidly, and mostly appear underground. Rhizomes are characteristic of a unique ability known as vegetative reproduction. If one were to separate a rhizome into many different pieces, each individual piece would give rise to a new plant. Examples of some commonly known rhizomes include ginger, asparagus, and hops. Since rhizomes tend to grow rapidly, they extend the surface area of a plant. In the photograph above, ginger lies as a common household rhizome.