Halifax Fertilizer 19-0-6 W/PRODIAMINE 19-0-6 25% XCU Fertilizer with .37% Prodiamine 50 lb - This fertilizer provides a balanced nutrient mix to enhance plant and turf growth, while the added Prodiamine offers effective pre-emergent weed control. Achieve a lush, weed-free lawn with this solution. The fertilizer contains 25% XCU. XCU slow-release fertilizer provides gradual, steady nutritional uptake for up to 10 weeks of plant response.