While I haven't tried, I know it's possible. I recommend using double the amount of fresh flowers compared with dried ones. It's best to use them on the same day they're harvested. You can keep any unused flowers in a ziplock bag with a damp paper towel for a further couple of days. For traditional chamomile tea, remember that it's just the yellow heads used, not the petals or leaves. However, the whole chamomile blossoms are edible.