A first tea should be caffeine-free, mild and genuinely sweet without anything added, and this collection is built to that spec. Chamomile and lemon balm are the gentlest herbs in the catalogue, spearmint is the one children reliably like, and a single fresh stevia leaf sweetens a whole cup.
Growing it is most of the appeal. Children who pick the leaves drink the tea. One caution worth passing on: chamomile is in the daisy family, so skip it if there is a ragweed or daisy allergy in the house.