That's interesting regarding the St. John's Wort. I've recently been having more sensitive skin. I might leave off getting more and see what happens there. I'll have to lavish some more love on my lemon balm instead, see if I can getting it thriving a bit better.
Lavender could be another one to look into. I didn't realise that was any adaptogen too. I've been meaning to try and root some cuttings and get some more growing.