Centipede Lawn - Maintenance (Code #CLM)
Soil Test RatingPotassium

Low K

Coast: 0-60 lbs/A

Pied: 0-100 lbs/A

Medium K

Coast: 61-150 lbs/A

Pied: 101-200 lbs/A

High K

Coast: 151-250 lbs/A

Pied: 201-350 lbs/A

Very High K

Coast: 250+ lbs/A

Pied: 350+ lbs/A

PhosphorusRecommended Pounds N-P205-K20 per 1000 square feet (See Comments)

Low P

Coast: 0-30 lbs/A

Pied: 0-20 lbs/A

2-1-1
(CM1)
2-1-1
(CM1)
2-1-0
(CM1)
2-1-0
(CM1)

Medium P

Coast: 31-60 lbs/A

Pied: 21-40 lbs/A

2-1/2-1
(CM2)
2-1/2-1
(CM2)
2-1/2-0
(CM3)
2-1/2-0
(CM3)

High P

Coast: 61-100 lbs/A

Pied: 41-75 lbs/A

2-0-1
(CM4)
2-0-1
(CM4)
2-0-0
(CM5)
2-0-0
(CM5)

Very High P

Coast: 100+ lbs/A

Pied: 75+ lbs/A

2-0-1
(CM4)
2-0-1
(CM4)
2-0-0
(CM5)
2-0-0
(CM5)

Coast = Coastal Plain    Pied = Piedmont, Mountain, and Limestone Valley

Recommendations:

Recommended pH:5.0 to 6.0. If the pH is less than 5.0, see Lime Table D and the soil depth adjustment table that immediately follows the lime tables.
Nitrogen:1-2 pounds nitrogen (N) per 1000 square feet
Magnesium:

If soil test Mg level is low and lime is recommended, use dolomitic limestone.

Coastal PlainLow: 0 - 30 lbs/acre Medium: 31 - 60 lbs/acre High: >60 lbs/acre
Piedmont Low: 0 - 60 lbs/acre Medium: 61 - 120 lbs/acre High: >120 lbs/acre
Other:Note iron recommendations on Fact Sheet.

Comments:

CM1.

Apply 5 pounds of 10-10-10 per 1000 square feet after spring green-up and again in mid-summer.

CM2.

Apply 4 pounds of 16-4-8 per 1000 square feet after spring green-up and again in mid-summer.

CM3.

Apply 5 pounds of 10-10-10 per 1000 square feet after spring green-up. In mid-summer, apply 1½ pounds of 34-0-0 or 1 pound of 46-0-0 per 1000 square feet.

CM4.

Apply 4 pounds of 15-0-15 per 1000 square feet after spring green-up and again in mid-summer.

CM5.

Apply 1½ pounds of 34-0-0 or 1 pound of 46-0-0 per 1000 square feet after spring green-up and again in mid-summer. Do not apply phosphorus or potassium. CAUTION: Centipede grass is extremely sensitive to high phosphorus levels. For further information, contact your County Agent.

Fact Sheet:

If grass is showing iron (Fe) deficiency symptoms (yellowing between the veins), apply liquid formulation of chelated iron or ferrous sulfate at label recommended rates periodically during the growing season. Do not apply foliar applications of iron to grass during the day after temperatures exceed 90 degrees.

Clippings do not contribute to thatch under proper management and thus, do not need to be removed. If they are removed, increase the fertilizer application rate by 30%.

If the lime recommendation is greater than 50 pounds per 1000 square feet, split the application and apply only half of the recommended amount. Wait 4 months and then retest for soil pH and lime requirement only. Take All disease of centipedegrass and St. Augustinegrass may sometimes occur if too much lime is applied; retesting before applying more lime is a precautionary measure to avoid problems with Take All disease.

CAUTION: Water lawn thoroughly immediately after applying fertilizer. Do not apply fertilizer when grass is wet.