Soil pH in Craighead, AR: Lime or Sulfur?

Typical topsoil pH in Craighead, AR

Typical topsoil in Craighead, AR is pH 5.76, just outside the 6-7 range for vegetable garden. Test first; it may need nothing.

What Craighead needs, by plant

• Already in range: potatoes, strawberries, azaleas and rhododendrons.
• Just outside, test first: lawn (cool-season grass) (off by 0.2), vegetable garden (off by 0.2), roses (off by 0.2), pink hydrangeas (off by 0.2).
• Lime: tomatoes 4.9 lb/100 sq ft.
• Sulfur: blueberries 1.8 lb/100 sq ft; blue hydrangeas 1.2 lb/100 sq ft.

What to do next

If your test lands near 5.76, you can skip lime and sulfur for lawn (cool-season grass), vegetable garden, potatoes, strawberries, roses, azaleas and rhododendrons, pink hydrangeas.

How mixed the soil is

Of the 431,440 surveyed acres in Craighead, AR, 43% are moderately acidic (5.5-6.5), 39% are strongly acidic (below 5.5), 18% are near neutral (6.5-7.3). Mapped soils run from pH 4.8 to 7.3, a spread of 2.5 units across 69 soil components. No single class covers 60% of the county, so two gardens a few miles apart here can need opposite treatments. Test your own bed.

Clay, organic matter and rates

Topsoil here averages 17.2% clay and 1.5% organic matter, which this site treats as loam. Moving it one pH unit takes about 7 lb of lime or 2.3 lb of sulfur per 100 sq ft. 1% of mapped components carry free carbonate (lime already in the ground).

Craighead against the rest of Arkansas

pH 5.76 is 0.32 above the Arkansas median of 5.44. 61 of 75 Arkansas counties have more acidic topsoil. Nationally it is more acidic than the US county median of 6.05.

Closest in pH within the state: Lafayette (5.72), Greene (5.73), Jefferson (5.73), St. Francis (5.73), Lawrence (5.79), Fulton (5.81), Woodruff (5.84), Lee (5.9).

The range in Arkansas runs from Madison at 5.02 to Desha at 6.33; Craighead sits 56% of the way up.