Luke wrote:
you could also do what was on Better Homes and Gardens the other day and
use a small post hole digger to dig 30cm holes in the ground and then
place some AG pipe in them. You thern simply water into the pipe and it
gets straight to the roots, you still have to go around and water the
garden but at least the water is getting where it needs to with little
wastage

Umm, this idea only works for transplanted established bushes and trees
where the pipe is buried beneaththe root ball. Otherwise, most of the
water goes downward and can only be collected by established big plants,
unless your soil is heavy, in which cast it has a greater chance of
spreading sideways through the soil.