"In areas of the country where the salt content of tap water is high, it can accumulate to
damage container plants over time. The solution is to water with rainwater.
Burpee's Rain Saver collects 60 gallons of screened water from gutter downspouts. This not only
provides high quality water for potted plants, it helps conserve water. If you think your
plants may already have too much salt in the soil, try filling the pot several times with
rainwater to leach out any salts that may have accumulated."