Pennington One Step Complete Complete seeding mix makes it easy to grow beautiful, thick, water-saving grass that thrives in both sunny and moderately shady areas. Everything you need is pre-mixed in one bag - premium Smart Seed grass seed, mulch, and professional-grade fertilizer. Simply apply, water, and watch it grow. Perfect for patching or repairing problem spots in your lawn. This super-absorbent seeding mix holds and maintains moisture around the seed while providing the essential nutrients to help grass grow healthy and strong.