I do literally have a BS in Horticulture from UConn. Then worked as a head grower at a local wholesale greenhouse/florist for 7 years. Then quit and got into comic books.
Be advised, I lost most of my knowledge. Horitculture essentially has two programs. Business management, and research. I went business in the first place. Which is more focused on running greenhouses. While research is of course propagation, genetics, etc. Then in practice as a grower.. you don't actually use any of the plant knowledge much. 95% of the job is labor, of planting thousands of plants a month, plumbing, and electrical... Soils? well, swapped to potting soil entirely, so that faded.
But then even quit that, so, much of that is fading as well.
yeah, on hostas. Large and green/varigated for that area. boxed in, ought to stay there. but, I'm not a fan. big green leaves, nothing else. I would much rather a ground cover like strawberries, vinca, phlox, lavender, etc. then mix in flowering perennials, foxglove, columbine, black eye susan, etc, etc, and even reseeding annuals.