I have marjoram, thyme, rosemary, Thai basil, oregano and the tarragon together. Everything but the F.T. is flourishing. However, they all did the same last year till shortly after the triple digits hit. Not long after, all I had left was rosemary, basil and crispy dried herbs. Yesterday, I potted up a variegated thyme, pineapple mint and apple mint and hung 'em in the house. We'll see how that works.