I, too, have started an herb garden for my rabbit!
If you’ve planted mint, be careful where you planted it, you might wind up with TONS of mint plants. They’re little prolific fellars, they have lots of runners and will spread pretty rapidly. I’ve got 3 plants I keep in containers, so as to not choke my garden, and my other herbs are in seeding trays to see if they’ll come up. So far, I’ve got several dill and some chamomile, most everything else is still not germinating.
I also suggest soaking your parsley seeds overnight before you plant them – if you’re planting seeds, it helps with germination. They take as long as a month to begin coming up! I plan on using bunny poop to fertilize my garden, my mint plants seem to really be appreciating it!
Seems like everyone else has given you good advice on grass! I thought about growing grass but I don’t think I have enough containers given that I’ve got so many other things growing too, lol!
Correction: Just checked on my parsley and I have several little babies poking through the soil! So it seems like it took about a week and a half for them to sprout vs the month I’ve seen online after I soaked them the night before I sowed them. Thought I’d share!