Candor herbicide is an effective low volatile premix that controls most kinds of unwanted trees and brush as well as annual and perennial broadleaf weeds without harming desirable grasses. The post emergence activity of Candor targets woody plants and brush including blackberries and poison ivy. Control Trees and Brush with a Low Volatile Premix. Candor™ herbicide can be used to control weeds in pastures and range land, Conservation Reserve Program (CRP) acres, non-irrigation ditch-banks, fence rows, roadsides and other non-crop areas and industrial sites. The post-emergence activity of Candor targets woody plants and brush – including blackberries and poison ivy – as well as annual and perennial broad-leaves, while leaving desirable grasses unharmed.