Garden design
Water zones
water Zone Examples - dry zone
dry zone example a
Phot of Australian native trees and shrubs as part of a dry water zone.
Dry zone with Australian native plants in it.  Not all Australian natives are suitable as dry zone plants, though all these are.  Except when planting new native plants this section gets no water other than natural rainfall.  While none of these plants are food producing by having this dry zone it allows me to concentrate the available tank water I have on food producing plants in other parts of the garden. 

Most Australian natives plants have the added advantage in that the leaves that they shed have substances in them that actively inhibit the growth of weeds, making this part of the garden quite low maintenance as there is little weeding to do.
dry zone example b
Photo of an olive and a hazelnut tree.
A dry zone in my garden with an olive and a hazelnut tree plus Poa australis(Blue Tussock Grass)  at the edges.  There are also rocks and mulch to help limit water loss due to evaporation. 

The olive and Blue Tussock grass can withstand quite dry conditions.  The Hazelnut would benefit from some watering but as I harvest very few nuts from it I use my limited water supply on more productive food bearing trees.

Apart from watering the trees and shrubs when they were first planted this section has never been watered other than by natural rainwater.