Protect a New Lawn With Straw
If the weather is dry or warm, spread a layer of straw mulch over seeded areas. Straw mulch will slow evaporation, provide some shade, and disperse raindrops that might otherwise dislodge young seedlings.
Choose a clean mulching straw that is free of seed, such as wheat straw. Evenly spread about 50 to 80 pounds (one or two bales) per 1,000 square feet. In windy areas, stretch string over the mulch every few feet to keep it from blowing away. Burlap and agricultural fleece (textile mulch that admits water and sunlight) will also protect the seed from drying sun and wind. Burlap and fleece staked over seeded slopes will help prevent erosion and seed runoff. Remove mulches approximately three weeks after germination.