Dessau-Roßlau, Germany (dpa/tmn) - It saves a lot of tap water, if you use on hot days for it to be cast at the recent shower of collected rainwater. But you are doing the plants Good.

Because rain water is soft. It is basically distilled water and contains no lime. Many plants tolerate this water better than hard, lime-containing drinking water, explains the Federal environmental Agency. It cites as examples of Rhododendron and geranium.

Also many other plants, it goes like this - or in other words: Which Plant would be because of rain damage? The Federal environment Agency therefore recommends that to fill garden ponds with rain water.

For Collecting and pouring you should not use water that is walked on roof surfaces made from materials such as copper, zinc and Bitumen. Because of these roof surfaces can remove problematic components, which could damage the environment.

Further information on the use of rain water