How to prevent soil from eroding?

[ivanptr]

The soil around the fence is loose and the neighbor land is on the higher ground, so the rainwater runoff created problems.

There is a AG drain next to the retaining wall and we don't want the soil keep sliding to the gravel above the AG drain. Overtime, the soil will block AG drain...

My parents want to put some pavers on the soil to compact it. Is it a good idea?

What about installing some turfs on those soil? 

Or we put some concrete on the soil? 
Bastion 20kg Rapid Set Concrete - Bunnings Australia

So far,

the scale and intensity of landslide are not serious. But we want to start working on prevention before rainy season.

[ivanptr]

Grevillea Gin Gin Gem and Myoporum both look so small in the pot sold by Bunnings, would that grow and spread out covering more area of the slope? We bought a few of those yesterday.

And we also bought some Dianella 

will apply wetting agents and mulch (great tips u mentioned) this weekend

[ivanptr]

@MitchellMc . Thanks for the great tip! We will get it from Bunnings. It seems it can grow much larger over time. Hopefully it can cover more ground. Love it!