Watercress is produced in China, India, Myanmar, Vietnam, Malaysia, Indonesia and the Philippines and other Asian countries, is a kind of aquatic plants, does not contain toxins, can be eaten as a vegetable, and its flavor is delicious, folk also used as medicine.

Watercress prefers moist, fertile soil, flood-resistant and cold-tolerant. Suitable growing temperature 15-20 ℃, can withstand the low temperature below 0 ℃. Generally born in low wetlands, shallow swamps, river banks, or in paddy fields. Watercress is generally asexual reproduction.