Are herbal teas caffeine free?
Nearly always, but check the ingredients - some blends include green tea, matcha or guarana, which do carry caffeine.
How long should I brew them?
Five minutes or more, covered. They do not go bitter the way green tea does, so longer just makes them stronger.
Can I drink these while pregnant?
Some herbs are not recommended in pregnancy - raspberry leaf and certain blends among them. Check the pack and ask your midwife if you are unsure.
Which is best in the evening?
Chamomile is the traditional one, and lemon balm and valerian blends are taken the same way. All are caffeine free.