Is Ginger a Root or a Stem?

At first glance, it seems logical to call ginger a root since it grows underground. However, several structural features prove it is a stem:

1. Nodes and Internodes: Ginger has clearly visible nodes (the bump-like joints/buds) and internodes (the portions between nodes). Roots NEVER have nodes.
2. Buds: New shoots grow from the nodes of ginger. Roots do not produce buds.
3. Scale leaves: Ginger has small, brown scale-like leaves at the nodes. These are modified leaves — a feature found on stems, not roots.
4. Growth pattern: Ginger grows horizontally underground and produces new green shoots (culms) upward and new roots downward from its nodes. A true root cannot do this.

A Rhizome is a type of modified stem that grows horizontally underground. It stores food (starch) and helps in the vegetative propagation of the plant.

Other examples of rhizomes:

• Turmeric (Haldi)
• Lotus
• Ferns
• Bamboo (underground spreading stems)

Contrast: Potato is a modified underground stem too, but it is a Tuber (not a rhizome). Radish and Carrot are actual roots (taproot modifications).