Send a soil sample to your county extension lab

Steps

1. Collect 5-6 soil samples from different areas of the lawn using a trowel or soil probe.
2. Sample to a depth of 3-4 inches for established lawns (6 inches for new lawn areas).
3. Mix all samples together in a clean bucket.
4. Fill the lab's sample bag or container with the mixed soil.
5. Submit to your county cooperative extension office or state university soil lab.

Why It Works

A professional soil test ($15-30) measures pH, phosphorus, potassium, magnesium, calcium, and organic matter. The report includes specific lime and fertilizer recommendations for your soil. Virginia Tech says it plainly: don't guess — soil test. It is the single best investment in lawn care.

Tips

• Fall sampling is preferred for planning, but spring works too.
• Avoid sampling right after fertilizing or liming — wait at least 6-8 weeks.