Dragon's Calorbloom can be while ascending the Jagged Peak mountain. It’s a red plant that grows from the floor. A picture of it is shown above. "Flower with an uncanny shape, coursing with hot blood.

From the Pillar Path Waypoint site of grace, follow the nearby dirt path leading southwest down a trail of headless dragon statues. Follow the dragon-statue laden path and you'll find the Dragon's Pit ...