What is Propolis? Propolis originates from the sap of coniferous trees. Worker Bees collect the resin from the trees and carry it to the hive on their legs where other bees assist in removing beads of it from the worker bees legs because it is too sticky to perform this task as a solo job. The bees then combine this resin with honey, wax and stomach enzymes to convert this resin into "bee glue" or sealant in the hive of which we call Propolis. Propolis is used to seal cracks