The best time to cut new grass depends on whether your lawn was seeded or sodded:
- For newly seeded lawns: Wait about 6 to 8 weeks after planting before the first mow. At this point, the grass should be approximately 3 to 4 inches tall, indicating it is strong enough for trimming. Cutting too early can damage young shoots and their developing root systems. Follow the "one-third rule," cutting no more than one-third of the blade length in one session to avoid stressing the grass.
- For newly laid sod lawns: Mowing can usually start 2 to 4 weeks after laying the sod, depending on root establishment and grass growth. A simple test is gently tugging the sod—if it resists lifting, the roots are set enough to mow. Set the mower blade high initially to reduce stress on the new sod.
Additional tips:
- Always mow when the grass is dry for a clean cut.
- Use sharp mower blades to prevent tearing and stress.
- Avoid cutting the grass too short on the first mow; just trim the tips.
- Collect clippings in the first few mows to avoid smothering new grass.
In summary, patience for about 6 to 8 weeks for seeded lawns and 2 to 4 weeks for sod lawns, combined with careful mowing practices, will help ensure healthy new grass growth and lawn establishment.
