A sun tea is a type of herbal infusion made with herbs and water. But, rather than heating water on the stove, you use the power of the sun to heat up the water to make your sun tea. Making Sun Teas You can use fresh herbs from your garden, as well as dried herbs. Some examples of herbs and flowers to include are: lavender, rose petals, calendula, chamomile, lemon balm, feverfew, yarrow, red clover, peppermint, spearmint, catnip, echinacea, tulsi (holy basil), thyme, nettles