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Last Updated: November 10, 2009
Propolis, also known as bee glue, is a resinous, often reddish-brown substance gathered by the bees from gum found on trees and buds and may also contain additional wax that the bees make. It is used to close small crevices in the hive smaller than “bee space” (5/16 to 3/8 inch) and also to entomb pests or predators such as mice or small hive beetles. It is very sticky in warm weather and brittle in cold weather.
- John Skinner, University of Tennessee
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