This keeps the uniform look, if you concrete on top of it you won't match the color and texture!

Someday, I'll tell you about the crazy homeowners association plant nazi. 

She also demands I give her a hose bib so she can water her plants.

Had the place furnished like a posh pent house, lots of plants in front of the unit made the whole building look nicer.

Not sure what the cost per square foot would be by the time you got all the texture, paint etc. done.Maybe worth looking into.https://youtu.be/GLjhrXFo0Kw

Any kind of flower plantings will have to be pruned, headed, weeded, edged, etc.If it was a small yard, I'd just cover the whole thing with concrete and tell the tenants they can grow plants in pots.

It needs a lot of work, so I would of course ask for a discounted price, but I've been concerned it will offend her, or plant the idea to list publicly on the MLS and put us out of a place to live (since there's plenty of people who can overbid us these days).  

Looks good but I need to get some plants. 

It’s early in the year so all the plants aren’t up good year.

Quote from @Michael Plante: No one here or anywhere knows what the future will bringit’s 1 course and a bunch of studying.