Halifax Fertilizer 30-0-10 50% XCU Fertilizer with 2% FE and .42% Prodiamine - 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 50% XCU. XCU slow-release fertilizer provides gradual, steady nutritional uptake for up to 10 weeks of plant response.