Lotus Root Is the Underground Rhizome of the Lotus: Structure and Edible Value Explained

Lotus root is the underground rhizome of the lotus, the very lotus root people commonly see in markets and on their dining tables. The lotus has a very distinctive way of growing: the leaves and flowers rise above the water, while the lotus root grows horizontally in the mud at the bottom of ponds or paddy fields, with swollen internodes that store nutrients and fibrous roots emerging from the nodes to anchor the plant.

Structurally, the interior of the lotus root is filled with air channels, and when cut open it reveals a ring of holes of various sizes. These aerenchyma tissues connect to the leaves above the water and help the plant exchange gases, an important feature of how the lotus adapts to aquatic environments. Lotus root is rich in starch, so its texture ranges from crisp to starchy: some kinds are better for a quick stir-fry or cold salad, while others are better suited to stewing or slow simmering in soup.

In cultivation, lotus is often divided into three types by use: root lotus, seed lotus and flower lotus. Root lotus is grown mainly for harvesting the plump rhizomes, seed lotus is grown mainly for lotus seeds, and flower lotus is prized for its ornamental blooms. Lotus is usually grown in shallow ponds or paddy fields and likes warmth and plenty of sunlight. After winter sets in, the above-ground parts wither and the nutrients concentrate in the lotus root, becoming the source of growth for the following year.

As for common questions, many people are unclear about how lotus root relates to lotus leaves and lotus seeds. In fact, they all come from the same plant; only their parts and functions differ. After peeling or slicing, lotus root tends to darken due to oxidation, and soaking it in clean water can ease this somewhat; the change does not affect its normal edibility.