Honey Gardens Apiaries – Propolis Spray With Purple Loosestrife and Usnea – 1 oz. has wound healing properties of purple loose strife combine nicely with those of the propolis and Usnea. Used is the synergy of raw honey, propolis, purple loosestrife (a wildcrafted herb) and Usnea (a lichen) in this spray for maximum effectiveness. Propolis is a resin that honey bees gather from pine and poplar trees, and is used to coat the inside of the bee hive and protect if from intruders. The loosestrife is conscientiously wildcrafted, harvested at the peak of its potency, and extracted into pure grain alcohol and water.