Blue Sky

The 5th Chakra, Throat Chakra or Vishuddha relates to truth, purity, communication, growth through expression, independence, thought and speech, hearing, listening, and singing. It is connected to the cosmos, or space. The 5th Chakra is associated with the jaw, mouth, neck, throat, thyroid and parathyroid and tongue.
Yoga poses can help with ailments of the Throat Chakra. Depending on the specifics they are the neck stretches and shoulder openers like Halasana/Plow Pose, Sarvangasana/Shoulderstand, Setu Bandha Sarvangasana/Bridge Pose and Ustrasana/Camel Pose.
In accord with the Doctrine of Signatures some blue flowered North American herbs that relate to 5th Chakra are Blue Vervain Verbena hastata, Sage Salvia lyrata, Comfry Symphytum off., and Heartsease Viola tricolor.