There are many situations in your garden when there is need for lots of watering. Some garden features and crops require supplementary watering, depending by their type or by weather. You can reduce their needs by the following methods.
We all know that new plantings require more watering then already settled plants. You can reduce their watering by creating a saucer-shaped dip around each plant stem to hold the water and avoid runoff. You can also lay trickle or drip feed, irrigation so the water will go only to the roots of each plant instead of watering the surroundings. When planting container-grown plants make sure that the growing mix saturated with water before planting them. Immerse the plants in a bucket and wait until no air bubbles appear at the surface. This will ensure that the air is completely expelled. Water the plants again thoroughly immediately after planting. Also reduce the watering by destroying competitive weeds. Hoe the soil shallowly to keep it weeds-free.
Containers and hanging baskets also need lots of watering as the small amount of soil from them dry quickly especially over the hot days. You can reduce these watering by incorporating water-retaining granules in the growing mix before planting. Also make sure that the growing mix is 2.5-5 cm below the container rim so there is space for sufficient water to soak the growing mix thoroughly at each watering. When the weather is hot you can place the plants in a sheltered spot that is shaded for part of the day. Also keep them away from drying winds. Also you can protect the container-grown plants from drying out too quickly by placing the containers in groups rather than individually.
Food crops will always be in need for lots of watering in order to grow well and develop good cropping. Select your crops carefully especially if you live in a dry area. Several vegetables will fail to develop adequately if they will be short of water at critical periods in their development so make sure you can water them when they will mostly need it, for example the potatoes when their tubers are ripening, the tomatoes, courgettes and runner beans when flowering and when their fruits are swelling. Irrigate with seep or trickle hoses so that supplementary watering is targeted where it is most needed.
Lawn is also a big part from our garden that needs regular watering. Reduce the size of the lawn and create gravel beds or surfaces in order to reduce the water amount that you are using for your lawn. Also you can select a mixture of lawn grass species that are more resistant to drought conditions. It will also help reduce watering if you raise the mower blade height at which the grass is cut. Feed your lawn during the autumn with an appropriate fertilizer to encourage drought resistance in the sward.
On your patios you can create partial shade with timber structures to reduce the considerable glare from the sun on some patio surfaces else the reflection may affect adjacent plants increasing their moisture loss. You could use trees to provide shade but dry zones occur around their roots and these can nullify the advantage of their shade. Angle any slope on your patio so that water runs off onto the garden rather than being lost in adjacent drains. Also use decking for your patio rather than concrete or stone slabs. Decking will allow water to percolate through the gaps.
Water features from your garden will also consume lots of water. Convert moving water to still water features. The former has a higher evaporation rate especially if placed in a sunny, exposed position. To minimize water evaporation plant water lilies to cover the pond surface or similar uncovered water surfaces. Top up any water loss with stored rainwater rather than mains water.