A planting area can be made safe from weeds by having all the ground covered by native plants. Trees and shrubs are a good start to revegetation but they can’t keep the weeds out at ground level.
Weeds come from 2 directions: UP from the topsoil, and IN with the wind.
Laying newspaper, cardboard or weed mat immediately stops the weeds coming up and it takes about 2 years for the wind-blown weeds to take over the ground between plantings.
SEE our video clip on this method here
Where there is a plant growing, any other plant, such as a weed, can’t take up that same bit of ground – think what good bush is like or even a lawn.
So put the plants close together and use lots of ground covers like grasses and ground hugging spreaders to keep the weeds out. Then we can stop using herbicides.