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What to Do After Grass Sprouts?

Published in Lawn Care After Sprouting 3 mins read

After grass sprouts, the crucial next steps involve adjusting watering, preparing for the first mow, and potentially considering a light feeding to encourage strong growth.

Once those tiny green shoots emerge, you've successfully completed the germination phase! However, the work isn't over. The young grass is still delicate and requires specific care to establish a healthy, dense lawn. Proper after-sprouting care is essential for the long-term success of your new grass.

Essential Post-Sprouting Care Steps

Taking care of newly sprouted grass involves a few key areas: watering, mowing, and sometimes light fertilization.

1. Adjusting Your Watering Schedule

Watering remains critical, but the frequency needs to adapt as the grass grows to encourage deeper root development.

  • Initial Weeks: Usually, newly seeded grass requires irrigating every day while the seed is germinating and for the first few weeks of growth. This keeps the top soil moist, which is vital for germination and early root growth.
  • Transitioning: After about 2-3 weeks of growth, you can usually shift to watering every other day, and then every 3 days later on. The goal is to gradually transition from keeping the surface constantly moist to watering more deeply but less frequently.
  • Check Soil Moisture: Always check the soil moisture level before watering. The goal is to keep the top inch or two consistently moist, but not waterlogged. As the grass gets taller, allow the top half-inch to an inch to dry slightly between waterings before soaking again.
  • Timing: Water early in the morning to allow the grass blades to dry, reducing the risk of fungal diseases.

Watering Schedule Transition Summary:

Growth Stage Frequency Goal
Germination - 2 Weeks Daily Keep topsoil consistently moist
2-3 Weeks Post-Sprout Every other day Encourage roots to seek water deeper
Later Growth Stages Every 3 days+ Promote deep, strong root systems

2. Preparing for the First Mow

Mowing too early can damage tender sprouts, but waiting too long can stress the lawn.

  • Timing: Wait until the grass blades are about 3-4 inches tall before the first mow.
  • Sharp Blades: Ensure your mower blades are very sharp. Dull blades tear the grass, which can damage the young plants and make them susceptible to disease.
  • Mowing Height: Never remove more than one-third of the blade height in a single mow. For the first few mows, set your mower to its highest setting (around 2.5-3 inches for many cool-season grasses).
  • Mulch Clippings: Leave the clippings on the lawn if they are short. They return valuable nutrients to the soil.

3. Considering Light Fertilization

While not always necessary immediately, a light feeding can give the new grass a boost.

  • Timing: Some experts recommend a light application of a starter fertilizer (specifically designed for new lawns, often high in phosphorus) about 4-6 weeks after seeding, or once the grass is established enough for the first couple of mows.
  • Type of Fertilizer: Use a "starter" fertilizer or a low-nitrogen, slow-release formula to avoid burning the young grass. Follow product instructions carefully.

Additional Tips for Success

  • Minimize Traffic: Avoid walking on the newly sprouted grass as much as possible until it is well-established and has been mowed a few times. Foot traffic can easily damage tender shoots and compact the soil.
  • Weed Control: Deal with weeds carefully. It's often best to pull weeds by hand in a new lawn to avoid using herbicides which could harm the young grass. Address weeds proactively before they compete with the grass.

Following these steps will help your newly sprouted grass mature into a healthy, resilient lawn.