"Red List Category & Criteria: Least Concern ver 3.1 Year Assessed: 2010 Assessor/s: Rehel, S. Reviewer/s: Bhat, G.K., Augustine, J., Sadasivaiah, B., Rao, M.L.V. & Molur, S. Contributors: Molur, S. Justification: Ludwigia hyssopifolia is a widespread and commonly found plant with no threats. Hence the species has been categorized as Least Concern. Conservation Actions: Conservation activities for the species are not needed."
"Habitat and Ecology: It is an erect annual herb. It is wide spread growing in wet places, marshes, temporary pools and shallow waters. It is found growing in the plains upto 500 m. Systems: Terrestrial; Freshwater List of Habitats: 5, 5.4, 14, 14.1"
Ludwigia hyssopifolia is pantropical in distribution, likely native to America: it has probably been introduced to Bangladesh, Bhutan, Burma, Sri Lanka, India and Nepal. It is also found in Colombia, Congo-Kinshasa, Benin, Egypt, Ghana, Honduras, Iraq, New Guinea, Nigeria, Senegal, Sudan, Suriname, and West Polynesia.
In India it is distributed in Andaman & Nicobar islands, Assam, Andhra Pradesh, Bihar, Gujarat, Goa, Kerala, Manipur, Mizoram, Orissa, Rajasthan, and Tamil Nadu.