| Hi again Giorgio (Greg's Indigenous Plants & Landscapes). According to council regulations nature strips must allow access from parked cars to any foot paths or otherwise blocked with any thick vegetation. Strictly speaking lawn is the only option. You can generally get away with this sort of thing as long as it does not prompt any complaints from other residents or as long as it does not draw the attention of any council officers. I have had tussock grasses planted at either end of my nature strip, i.e. where cars should not be parked any way and blocking either driveway. Council officers have seen it because I have been required to cut back a Myoporum in my garden that was starting to block the foot path, but no mention was made of the tussock grasses on the nature strip. I have planted the central part with native grasses and Acaena novaea-zelandiae that I mow from time to time. You might want to re-think planting Blue Devils as their spiny nature will almost certainly draw complaints from other users of the nature strip. Save those for your property. You will also want to think about the overall neatness of the nature strip. If you plant herbs and grasses indiscriminantly and never mow it you may draw complaints about it being untidy. I would suggest planting the central sections with native grasses that can form a servicable lawn - Bothriochloa, Microlaena and Danthonia. You can then mow this occassionally and keep most of the nature strip looking 'conventional'. Areas adjacent to drive ways or perhaps even some islands in the central sections could be densely planted with herbs, lilies and Lomandra perhaps. | 
