Dill - to ease restlessness and stress, used in gripe water.
Lavendar - to balance emotions and induce peaceful sleep.
German Chamomile - to calm nervousness. I used it along with local honey as an antihistamine for my DS's hayfever. Roman Chamomile is almost the same but has anti tumour effects.
Lemon Balm - my fav for nervous tension, anxiety, depression, palpitations, can be used for a long time. Bees love it.
Catnip - tension headaches, anxiety, insomnia. Cats love it.