Typically the bulk of the bees working aren't going to venture to far from the hive to collect pollen and nectar. But they are looking for forage plants that produce high volumes of either and places where there are a lot of them. You'll see bees working plants around your home that are also producing in large amounts in the area. You typically won't see them working a handful of plants you've planted that aren't also available in numbers away from your yard.
When flows are low they will forage around for whatever they can find and you are likely to see more activity locally if you have the right kind of plants around. But don't look for 5 or 10 plants to amount to anything, even 50 or 100. There just isn't that much available from a single plant.
And, plants do not have or need to be edible to produce excellent honey. I would venture to say that most of the better honeys come from plants or trees that aren't eaten or produce fruit.
Dragonfly, anyone that doesn't like GR honey must be a honey snob!
"Success is not final, failure is not fatal: it is the courage to continue that counts." Winston Churchill