Re: mediterranean type nitrogen fixing plants

Thanks for all the input from the members. I do mulch - mainly port jackson clippings and vermicompost (have three bins but ouptut is negligible compared to the size of the garden) but some areas are favoured over others. This is obviously why some plants seem fine and others suffer. Well, back to mulching and so much for the low-maintenance fix!
 
I have been trying to establish earthworm nodes ( dumping vermicompost in particular areas, mulching heavily on top of it and watering sporadically) but with little success although there seems to be activity in winter. The main problem is that the topsoil (sand) retains little, if any, moisture - even the mulch breakdow seems static in summer hence little, if any, activity - bacterial or otherwise. The penalty of living where I do, I guess.  
 
As an aside, Pride of Madeiras have been excellent in establishing a mulch layer as they shed large amounts of foliage. Also, I plant lots of 'dusty miller" and then uproot and use as groundcover - seems to help.
 
Regards
Charl
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