Pokeweed and other Perennials
For pokeweed and many other perennials, a high rate of glyphosate is often more effective than anything else. Increasing the spray volume, or slowing down, to improve coverage can improve pokeweed contraol. Applying when plants have some size but are still completely underneath the spray boom can reduce the potential for regrowth, but be prepared to treat again later in the season when plants do regrow. The addition of Flexstar or Cobra can help with the desiccation of perennial vines, and any of the products rated 8 or better on morning glory in the “Weed Control Guide for Ohio and Indiana” can help with annual morning glory control. The addition of Classic may improve control of dandelions.