Don’t rush to plant following herbicide application according to a new article published in Restoration Ecology. In pots in a greenhouse experiment sprayed with aminopyralid or picloram at the recommended rate, native forb and grass seeds from a dry NW grassland had lower seedling emergence and biomass than pots sprayed with water. Even though the herbicides target broadleaf plants, grass seeds also suffered. Not just seeding post-spraying but also seed recruitment from the seedbank would likely be affected by spraying.
Wagner, V.
