Southern coastal soil holds zero nutrients. Nothing grows without heavy treatment and whatever you put in leaches away in weeks.

Of course it will if you cut and cart the future nutrients away each week while creating 'greenery' that is a monoculture entirely unattractive to animal life.

As long as you've got a water source, you can easily create a tiny patch of green that can survive for decades unattended - even in the midst of a desert.

Agreed, it's a struggle. We apply milorganite or similar biosolid product every third month to ensure the grass gets the nutrients it needs. Otherwise we get a spotty lawn, which in turn results in poor water retention and pooling.