There are also local economies - university(MTSU), Nissan plant, big medical center, that can limit a downturn.

Lobby/garden “happy hours” on designated days, intranet portal for residents, vetted and dedicated dog walker, plant watered, some kind of delivery arrangement discount with local restaurants....Free library in lobby, zip car space in parking lot Maybe I can think of more after coffee

I was there when the GM plant folded, and the town had a dip for a while.

*Plant Nursery & Garden Center.Assembly of pre-manufactured parts for sale on the premises (See § 4.21).School,** public or private.Commercial Uses.

Is there a power plant, mine, oil and gas industry in the area?

So far the tropical regions don't seem to have a big problem.  

Makes sense when you consider UPS World Hub for receiving parts for assembly..ie Ford plant and Toyota in Georgetown.

Currently the site is a factory that sits next to a wastewater treatment plant.

If you put plants next to the house, the tenants need to keep them alive and they will be watering next to the foundation/basement windows.

You should get a kick out of this toilet paper story in Northern Michiganhttps://www.9and10news.com/2020/03/16/great-lakes-tissue-company-to-host-toilet-paper-sale-wednesday/They actually were offering 5 cases per person ($20 per 96 roll case) ...Because we manage quite a few rentals, I sent my husband down (25 minutes south) to take them up on the offer, the line was so many miles long on so many sides of this plant, he just laughed and came back home.