Hi! Would love to swap for your lemon mint and ground cherry seeds. I have Mexican Mint Marigold which I believe is the Mexican tarragon you are seeking. Can sent plenty of this. Peggy

not even nasturtiums will survive very long in a dixie cup... but keeping mints pot bound is needed, unless you want to plant it in a crner of your lawn, and let it grow through- and in your climate, you could grow one of the prostrate (corsican) mints, and treat it just like normal lawnage (only it smells better when its mown) actually, keeping the bee balm confined isn't a bad idea either...that's another one that can be a bit too pushy for its own good. what containers? a 5-gallon bucket with the bottom 1/3 full of packing peanuts is ideal, and if you're really slick, you can bury it half-way or more in the dirt, and/or paint it to look less like a 5-gallon bucket. I would put the tomatoes at the back of the bed, interplanted with garlic and basil (tomato garlic, tomato, basil, tomato, garlic, etc and then plant the marigolds and nasturtiums at their feet, I know nothing at all about the borage, so I would plant it based on height... and I'd keep a pot of mint at one end, and a pot of bergamot (bee balm) at the other.

If there are no other symptoms, then it could be grey mould (Botrytis). However, it also looks like there might be some faint yellowing patches...? It'd be more visible on the topside of the leaf. If so then it might be downy mildew (Peronospora). Have a look at some images of the two online and compare.