Due to climate change and global warming, drought is now a constant reality. Water conservation and using water wisely is critical. Water supplies and watershed must be protected and preserved. Gardening and sustainable practices must make use of waterwise irrigation.

Southern California officials are issuing new restrictions on outdoor water use amid the worsening drought. It’s fine for lawns to go brown – and it’s even better if we replace them. But we must keep trees alive and healthy. It’s OK to water them responsibly. Even the San Diego County Water Authority encourages residents to water their trees.

Trees are the most powerful weapon to fight against global warming and climate change. We know trees clean the air by filtering pollutants and producing oxygen. Trees also reduce energy costs by providing shade and cooling the air, offsetting the scorching heat coming from streets, concrete, and buildings. (the “urban heat island effect”). California street trees save the amount of electricity it would take to air condition 530,000 households every year.

During a drought, avoid pruning or other routine maintenance, and avoid fertilizing the tree. You don’t want to encourage too much growth. And if you are letting your lawn die around your trees, great! Lawn competes with your trees for water. In fact, it’s a great idea to take the lawn out around your trees, and replace it with something more drought-tolerant anyway.