After overseeding your lawn, the general recommendation is to wait about 2 to 4 weeks before mowing. This waiting period allows the new grass seeds sufficient time to germinate, develop roots, and establish themselves in the soil, reducing the risk of damaging the young grass during mowing. Here are key points to consider:
- Mow when the new grass blades reach about 3 to 4 inches in height.
- The timing can vary depending on the type of grass; for example, ryegrass may be ready for mowing in about 2 weeks, while slow-growing grasses like Kentucky bluegrass may take up to 4 weeks or more.
- Weather conditions affect growth: mild and rainy weather speeds germination, while hot and dry conditions slow it down.
- When you mow for the first time, use the mower blade set to the highest height setting and follow the rule of cutting no more than one-third of the grass height at a time.
Some experts suggest that in certain cases, mowing might be possible as early as 7 to 10 days after overseeding if the grass is sufficiently tall and established, but waiting 2 to 4 weeks is the safest approach for best results. In summary, plan to mow your lawn roughly after 2 to 4 weeks post overseeding, once the new grass is about 3 inches tall and well rooted, always mowing with care to preserve the health of your lawn.
