Dry weather gardening:
Create a water source nearby so you can help to fix the dryness.
You can use a plastic jug or tall juice carton with small holes placed all around the base. Just plant these jugs right next to where you expect to be planting a vegetable, flower or herb plant and fill them with water. When the rain is not enough to feed the plant, you can get water directly to the roots. This is the only way to go if you are trying to conserve water. If you do choose this option, once a week lightly mist the leaves of the plants either in the morning or at dusk.
Digging circular, small ditches around a row of plants is a good idea if your only water comes from a garden hose. Make sure the plants are elevated on a small hill and that their roots are covered. If the circles are connected between plants, you can just set the hose in front of the first plant and let the water flow to the other plants. Making sure that only the plants are being watered.
Try to create some shade, move potted plants to under your trees.
The garden is a metaphor for having a place to develop an ethical way to understand life and to make a life that is ethical.