Watercress

Where does Watercress grow?

Found in: Afghanistan, Africa, Albania, Algeria, Angola, Argentina, Armenia, Asia, Australia, Austria, Azerbaijan, Balkans, Belgium, Bhutan, Bolivia, Bosnia, Botswana, Bougainville, Brazil, Britain, Bulgaria, Burundi, Cameroon, Canada, Caucasus, Central Africa, Central America, Central Asia, Chile, China, Comoros Congo, Cook Islands, Costa Rica, Croatia, Cuba, Cyprus, Czech Republic, Denmark, Dominica, Dominican Republic, East Africa, East Timor, Ecuador, Egypt, Egypt - Sinai, Ethiopia, Europe, Falklands, Fiji, France, Georgia, Germany, Greece, Guiana, Guyana, Haiti, Hawaii, Himalayas, Hungary, India, Indochina, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Korea, Kyrgyzstan, Laos, Lebanon, Lesotho, Libya, Luxembourg, Madagascar, Malaysia, Mali, Mauritius, Mediterranean, Mexico, Morocco, Mozambique, Myanmar, Nepal, Netherlands, New Caledonia, New Zealand, Niger, Norfolk Island, North Africa, North America, Northeastern India, Norway, Pacific, Pakistan, Palestine, Papua New Guinea, PNG, Paraguay, Peru, Philippines, Poland, Portugal, Romania, Russian Federation - Ciscaucasia, Dagestan, Rwanda, Sao Tome and Principe, Scandinavia, SE Asia, Seychelles, Sicily, Sikkim, Slovakia, Slovenia, Solomon Islands, South Africa, Southern Africa, South America, Spain, Sri Lanka, St Helena, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, Timor-Leste, Tunisia, Turkey, Turkmenistan, Ukraine, Uruguay, United Kingdom, United States, Uzbekistan, Vanuatu, Venezuela, Vietnam, West Africa, West Indies, Yugoslavia, Zambia, Zimbabwe

Notes: It is high in iodine.

Status: It is a commercially cultivated vegetable. It is becoming accepted as an important and popular green in the highlands of Papua New Guinea. It is sold in local markets.

Growing Watercress

Cultivation: It is grown from cuttings planted along the edges of clear running water. Cuttings of 10-15 cm long are suitable. The plant has roots along the stem at the node and cuttings quickly form roots in water. A spacing of 30 cm is suitable. This small plant keeps living for many years once established. It can also be grown from seeds. Plants can float on the water. It will not tolerate drying out. Watercress has a high phosphate requirement.

Edible Uses: The leaves and stems are eaten raw or cooked and have a spicy flavour. They are also fried. Cooking should be used if the water in the stream is not pure and clean. The seed can be germinated to produce sprouts. The seeds can be ground to make a mustard flavouring.

Production: Harvesting can occur 4 to 6 weeks after planting. Regular picking encourages branching and increases production. Tips 5-10 cm long are harvested. This can be repeated every 4-6 weeks.

Nutrition Info

References

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