I have a space where I want to kill everything ... leave bare dirt. It's got grass .. probably some sort of fescue from the look of it, plus blackberries, "burr clover" (buttercup), dandelion, and other. Any suggestions? My first thought is to spray it twice, first with roundup, then come back later with crossbow for the blackberries. It's adjacent to a hay field so I'm thinking about waiting 'til late summer after the hay has been bailed and hauled off and irrigation is done. Are there other spray options that'd be more effective?
