****************************************** Blane White MN Dept of Agriculture [log in to unmask] >>> [log in to unmask] replied: "Poplar trees are a very good source of propolis, This being a resin is a very good sink for most pesticides" Yes and they are also spraying blooming understory vegetation that is being foraged by honey bees with sevin. A sure formula for problems due to contaminated pollen being brought back to the hive. Here in MN it looks like sweet corn production in the 1970's. Not pretty. FWIW blane