Even with water restrictions in place, it is still possible to create an attractive garden without using copious amounts of water. Soil Preparation Soil preparation and mulch are essential in a waterwise garden. A good mulch has many advantages, including;
- adding valuable nutrients and humus to the soil as it breaks down,
- keeping the soil temperature uniform,
- reducing surface evaporation by 70-80 per cent,
- allowing for deep and infrequent watering,
- encouraging earthworm activity, which creates channels for the passage of water and roots, and
- eliminating stress in shallow rooted plants and suppressing weeds. Compost and horse, sheep and cow manures are excellent for improving soil quality. Pea straw, lucerne, compost, leaf litter and chopped bark all make superb mulches. Watering Methods The method used to deliver water to plants is very important in getting the most benefit out of the water used. Conventional sprinklers deliver large amounts of water to large areas and can be extremely wasteful if not positioned thoughtfully. The most effective waterwise watering systems use in-line drippers, weeping hoses and drip tubes. These products are designed for placing under mulch and work best at low pressure, where water is delivered over a period of several hours, directly to the plant's roots. In-line drippers are also suitable for lawns. Grouping plants with similar water requirements will assist in preventing over and under watering. Computerised watering systems allow for the delivery of a set amount of water at specified times, to various sections of the garden. Tap timers are a useful and cheap alternative. Using phosphate and petrochemical free, biodegradable laundry powders allows you to safely reuse the laundry water on the garden. Plant Selection There are 100s of water wise plants. You can select from Australian natives or exotic plants that come from areas of the world with Mediterranean climate conditions (these are areas that experience hot, dry summers with the majority of rain falling in winter). Plant labels often state how much water a plant needs. If you are not sure, look for plant characteristics such as thick leathery, hairy, wax-coated, succulent, silvery grey or fine needle-like leaves. Other sources of information for suitable water wise plant material are old neglected gardens, holiday homes and streetscapes. Top Summer Performers Ceratostigma plumbaginoides, Correa alba, Escallonia varieties, Hardenbergia violacea, Hibiscus (evergreen) & H. syriacus (deciduous), Lagerstroemia indica hybrids, Lomandra longifolia, Plectranthus argentatus, Santolina varieties, Westringia fruticosa & varieties. With a bit of planning and some basic knowledge you too can have a water wise garden. Lyn Phillips
Copyright Lyn Phillips 2006 |
