Some plants are sensitive to treated water

UNIVERSITY OF MINNESOTA EXTENSION - www.extension.umn.edu

Municipal water may be safely treated with fluoride and chlorine to provide dental benefits and disinfect water. But some plants are sensitive to these additives. For example, peace lilies (Spathiphyllum) are sensitive to fluoride and may exhibit burned leaf tips. Softened water can also have a negative effect on plants like orchids. So use rainwater or reverse osmosis water for your houseplants. You can also use well water. Add a small amount (about half the recommended strength) of fertilizer to provide the nutrients plants need.