Regardless of whether it is fruit, vegetables or flowers: If you treat tap water correctly, you can also use it to water outdoor plants. Here are 3 ways to do this.
Irrigation water is not just irrigation water, as some expert gardeners know to report and therefore do not simply turn on the drinking water tap, but increasingly use rainwater, because this is really excellent for watering plants and indoor plants. Many garden owners therefore set up several rain barrels in the garden to collect the free water in them. Others, on the other hand, rely on collective storage such as an underground tank.
But if you don't have a rain barrel, you can use tap water to water the outdoor plants. But then you have to prepare the tap water beforehand. Here we present various ways to do this.
Treating tap water for outdoor plants
➤ Option 1 - Let the tap water stand:
Depending on where you live, the water from the tap is often too hard. So the pH is too high. An increased pH value can usually be recognized by the yellowing of the plant leaves. However, you can also check the pH value with indicator sticks (e.g. available here).
If your tap water is really too hard, you can counteract this problem by letting the tap water sit in a bucket for longer so that the limescale can settle in the water. You can then skim off the actual irrigation water from above. Of course, the situation is different if you own a water softening system. Then you can use the water directly.
➤ Option 2 - add vitamin C:
You can also add pure vitamin C to the tap water. This makes it significantly softer and is therefore much better tolerated by outdoor plants.
➤ Option 3 - Boil tap water:
You can also boil smaller amounts of irrigation water. This should then happen at least 60 degrees.