Centipede Soil pH — Keep It Acidic
Ideal pH: 5.0-6.0 (ACIDIC). This is LOWER than most lawn grasses. DO NOT lime centipede unless soil test shows pH below 5.0. Why? Centipede thrives in acidic soil. Raising pH above 6.0 locks up iron and causes severe iron chlorosis (yellowing). The #1 mistake homeowners make is applying lime to centipede because 'everyone says to lime your lawn.' If pH is above 6.0: apply pelletized sulfur at 5 lbs per 1,000 sq ft when air temps are below 75°F. Recheck in 3 months. If pH is 5.0-6.0: do NOTHING to pH. If pH is below 5.0: apply dolomitic lime CAREFULLY at 25 lbs per 1,000 sq ft. Recheck in 3 months.
Frequently Asked Questions
What pH does centipede grass need?
Centipede thrives at pH 5.0 to 6.0, which is more acidic than most other lawn grasses. This is the most important number to know for centipede care.
Should I lime my centipede lawn?
Almost never. Only lime if a soil test shows pH below 5.0, and then apply dolomitic lime carefully at 25 lbs per 1,000 sq ft. The number one mistake homeowners make is liming centipede because general lawn advice says to lime.
What happens if centipede soil pH is too high?
pH above 6.0 locks up iron, causing severe iron chlorosis and yellowing. Apply pelletized sulfur at 5 lbs per 1,000 sq ft when air temps are below 75 degrees F. Recheck in 3 months.
How often should I test centipede soil pH?
Test annually, ideally in late winter. Use the same lab each year for consistent results. pH management is the single most important aspect of centipede care.
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