{"product_id":"starter-fertilizer-15-20-10-18-lbs-high-phosphorus-lawn-food-for-new-grass-seed-amp-sod-promotes-fast-root-growth-stronger-germination-amp-early-green-up-professional-grade-lawn-fertiliz","title":"Starter Fertilizer 15-20-10 – (18 lbs.) High Phosphorus Lawn Food for New Grass Seed \u0026amp Sod – Promotes Fast Root Growth Stronger Germination \u0026amp Early Green-Up – Professional Grade Lawn Fertiliz","description":"\u003cp\u003e- Designed for New Lawns \u0026amp; Overseeding ? Ideal for starting fresh seed, laying sod, or overseeding thin patches. Encourages germination and deep root growth with a proven 15-20-10 NPK ratio.\n- Includes slow-release XCU nitrogen, ammonium sulfate, iron, and essential micronutrients for steady feeding, early color, and long-lasting growth. Less fillers?more nutrient-dense lawn food.\n- Safe for Seed \u0026amp; Sod: Formulated to be gentle on new seedlings while providing the nutrients they need most. Ideal for new lawn installs, fall overseeding, and spring repairs.\n- Clean, Easy-to-Spread Prill: High-quality granules ensure smooth flow through spreaders and even coverage across the lawn. Professional results made simple for homeowners.\n- ???? Professional-Grade Quality, Only from Lawn Synergy ? Our proprietary starter blend is used by lawn care pros but only available to homeowners here. Not sold in big box stores.\n- Provides Faster Germination and Seed Development\n\u003c\/p\u003e\u003cp\u003eProduct description\u003c\/p\u003e\u003cp\u003eStarter Fertilizer for New Seed and Fresh Sod\u003c\/p\u003e\u003cp\u003eSlow-release XCU Fertilizer\u003c\/p\u003e\u003cp\u003eHow Does XCU Slow-Release Nitrogen work?\u003c\/p\u003e\u003cp\u003e15-20-10 Starter Fertilizer Features\u003c\/p\u003e\u003cp\u003eHow to Apply for Best Results\u003c\/p\u003e\u003cp\u003eSimple steps for new seed, overseeding, or fresh sod\u003c\/p\u003e\u003cp\u003eA balanced 15-20-10 starter fertilizer designed to support early root development and healthy establishment in new or renovated lawns. Blended with slow-release nitrogen, ammonium sulfate, and micronutrients to provide steady, reliable feeding during the first stages of growth.\u003c\/p\u003e\u003cp\u003eXCU slow-release fertilizer provides gradual, steady nutritional uptake for up to 10 weeks of plant response. XCU fertilizer has the highest nitrogen (N) content (43%) and lowest sulfur content (4%) of any polymer-coated sulfur-coated urea (PCSCU) on the market. The value is more area can be covered per application using less fertilizer, which is more efficient and economical. Also, with less N lock-off more of the applied N is taken up and utilized by turfgrass or plants in the expected time frame.\u003c\/p\u003e\u003cp\u003eSoil moisture penetrates the sulfur and polymer coatings.\u003c\/p\u003e\u003cp\u003eNitrogen begins to dissolve creating pressure within the granule.\u003c\/p\u003e\u003cp\u003eWith previous-technology Sulfur coated urea, this pressure cracked the coating, immediately releasing N (catastrophic release). The inner polymer coating of XCU fertilizer results in a hybrid of diffusion-based release and catastrophic release, resulting in a more consistent release profile.\u003c\/p\u003e\u003cp\u003eAfter N release, the sulfur eventually breaks down into the soil where it may be taken up by the plant.\u003c\/p\u003e\u003cp\u003eProvides the essential phosphorus and early nitrogen balance that young grass needs to develop deep, vigorous roots during establishment.\u003c\/p\u003e\u003cp\u003eA dual-source nitrogen blend:\u003c\/p\u003e\u003cp\u003eThis combination provides consistent growth during the first critical weeks.\u003c\/p\u003e\u003cp\u003eIncludes key micros that help young turf handle stress, color up evenly, and develop properly during its first season.\u003c\/p\u003e\u003cp\u003eApply our 15-20-10 Starter Fertilizer evenly using a broadcast or rotary spreader at the recommended rate on the bag. For new seed or overseeding, apply before or immediately after seeding. Lightly water after application to help the nutrients move into the soil and support early root development. Safe for all turf types when used as directed.\u003c\/p\u003e\u003cp\u003eWe recommend 5 lbs per 1,000 sqft.\u003c\/p\u003e","brand":"GreenGroove","offers":[{"title":"Default Title","offer_id":51935679742235,"sku":"B0C8C7C6HH","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/3516\/0603\/files\/61_svEkwZ7L._SX522_4fce4893-5f93-4c4f-bb08-bb31cdeb7ccd.jpg?v=1774545087","url":"https:\/\/greengroove1.com\/products\/starter-fertilizer-15-20-10-18-lbs-high-phosphorus-lawn-food-for-new-grass-seed-amp-sod-promotes-fast-root-growth-stronger-germination-amp-early-green-up-professional-grade-lawn-fertiliz","provider":"GreenGroove","version":"1.0","type":"link"}