<human>:  How can I make my garden more sustainable?
<bot>: One way to make your garden more sustainable is to reduce your water usage by using efficient watering tools such as irrigation systems. You can also use mulch to help retain moisture and reduce water loss from evaporation. Additionally, you can opt for native plants that require less maintenance and use fewer resources. Composting can be beneficial as it helps replenish the soil naturally and enriches the soil with nutrients. Finally, be sure to choose sustainable materials when building structures in your garden such as rain barrels and trellises.