Overview

• Local authorities in Bavarian, Hessian, Saxon and Potsdam districts have imposed tap water restrictions for irrigation, with penalties reaching €50,000 for violations.
• The Umweltbundesamt warns that most common German plants cannot tolerate hard tap water’s high lime content and residual disinfectants.
• Stale rainwater collected in barrels is recommended for its lower pH and reduced mineral load, making it gentler on roots.
• Gardeners are advised to water in the early morning when soil moisture retention is highest and evaporation is minimal, encouraging deeper root growth.
• Recycled kitchen water, including egg or potato water, can serve as a budget-friendly, nutrient-rich alternative when rainwater supplies run low.