Water hyacinth has been on the Delta for decades, but really exploded in 2011 and 2012 as officials were not able to obtain a permit to spray chemicals in a timely fashion. Efforts to control hyacinth in the Deltas focuses primarily on the use of chemical herbicide applications. Officials aggressively spray chemicals; a prepared document
Little thought is given to aquatic weeds unless you live or recreate on the worlds waterways. The aquatic plant harvester industry has grown in response to those concerns. With Pictures of steam powered cutter boats dating back to the late 1890’s, we know that excessive plant growth has been a problem for a long time.