Conserve water. Mulch.
Put a layer of mulch around trees and plants to slow the evaporation of moisture. Mulching around trees, shrubs, and in flower beds can result in a ten-fold reduction in evaporative water loss from soil. (Center for Water-Efficient Landscaping)
Climate change is primarily a water crisis. We feel its impacts through worsening floods, rising sea levels, shrinking ice fields, wildfires and droughts. However, water can fight climate change. Sustainable water management is central to building the resilience of societies and ecosystems and to reducing carbon emissions. Everyone has a role to play – actions at the individual and household levels are vital. (UN)