iGrow Carpet Seed and Establish Pro (Pre-Seeder) 6-9-6 A starter fertiliser designed to prepare your soil and give new grass the best possible foundation before seeding or laying turf. Safe for kids and pets when used as directed. Because it's the same granule size and applied at the same rate as our Spring, Summer and Autumn feeds, there's no guesswork — it fits straight into how you already work. The science bit Applied before sowing or laying turf, the higher phosphorus level drives rapid root development from day one, while nitrogen and potassium support even, healthy growth above and below the surface. Nitrogen (6% N)Encourages healthy top growth as new grass emerges. Phosphorus (9% P)The key ingredient at this stage. Drives rapid root development so seedlings establish quickly and evenly. Potassium (6% K)Strengthens young roots and shoots, building resilience to stress and disease from the start.