Patent PP21589 was granted and assigned to Spring Meadow Nursery, Inc. on December, 2010 by the United States Patent and Trademark Office.
A new and distinct cultivar of Clethra plant named ‘Caleb’, characterized by its upright and somewhat outwardly spreading plant habit; vigorous growth habit; freely branching habit; dark-green leaves; large inflorescences with numerous large flowers; and good garden performance.