[Cass]

In areas so remote that modern medical treatments aren't available at all, people do often still grow their own medical plants.

If lack of finances is an issue, growing your own herb garden certainly isn't the solution. These plants aren't going to replace a $500 shot of insulin. At best you could maybe replace the occasional aspirin, dramamine, or buscopan, all of which are available over the counter at price points much lower than what it would cost to even buy a bag of quality seeds, never mind soil, fertilizer, and the garden to plant it all in. (Or the time and labor to plant and tend it).