Combine the yarrow, calendula, and comfrey in a large bowl or jar.
Pour boiling water over the herbs, making sure they're fully immersed.
Cover the bowl or jar and allow it to steep for at least 30 minutes
After steeping, strain the liquid, making sure all bits of herbs are removed.
Allow the strained tea to cool down to a comfortable warmth before applying as a rinse, poultice, or spray.