Alion®, a Group 29 pre-emergent herbicide is anything but exciting to watch. Why? Because you’ll never actually see it do anything – and that’s the point. Spray it in your orchard and vineyard for season-long control of annual grassy and broadleaf weeds. Not to mention glyphosate, triazine and ALS-resistant weeds, too. It’s literally as exciting as dirt. Until you see the results.