buy decent ones from the health food shop,
It's the sugar you are missing, once you get over that, you find them refreshing,
I drink a lot of fennel, nettle, mint,
use an infuser or plunge tea pot for dried camomile and fresh Egyptian mint, some people add sugar to mint tea, but it's like normal tea if you get use to it without it doesn't feel refreshing with it.
My children love the fruit teas, but I usually buy the decent ones, they tend not to like the cheaper ones, go for a brand that specialises in herb teas, Twinings and others are band wagon jumpers, and have yet to make a decent one, they have never quite got the bit about quality of ingredients or the drying process, and their stuff tastes totally wrong.
Always when you open them transfer to a glass jar rip label off shove in jar, or they lose flavour and get tainted by other things around them.