Shrubbery's not a problem. Roots will avoid pvc and not affect cast. And just try getting anything fixed for $20. You rent that place and it's just a matter of time before it gets damaged.
Hide it but make it visible. Unless of course there's a rule against it.
Not true in the slightest regarding the roots. Not sure what you do for a living but I deal with these on a daily basis. And a 20 fix if he does it.
Take 5 min and google tree roots and sewer pipes. Or if you like take a walk down the plumbing isle at Home Depot. They make products that are specifically used to kill the roots in the pipes. Also regarding the PVC. The roots press up against it and crack the pipe allowing the roots to enter it.
Anywho....this is serenitys thread and not a place to have a disagreement. If you would like to discuss it send me a PM.