Soil pH in Coffee, GA: Lime or Sulfur?

Typical topsoil pH in Coffee, GA

Typical topsoil in Coffee, GA is pH 5.18, too acidic for vegetable garden. Expect roughly 3.9 lb of lime per 100 sq ft, but only after a soil test confirms it.

What Coffee needs, by plant

• Already in range: potatoes, blueberries, azaleas and rhododendrons, blue hydrangeas.
• Lime: lawn (cool-season grass) 3.9 lb/100 sq ft; vegetable garden 3.9 lb/100 sq ft; tomatoes 3.9 lb/100 sq ft; strawberries 2.4 lb/100 sq ft; roses 3.9 lb/100 sq ft; pink hydrangeas 3.3 lb/100 sq ft.

What to do next

If your test confirms pH near 5.18, spread about 39 lb of ground limestone per 1,000 sq ft of vegetable bed, ideally in fall.

How mixed the soil is

Of the 377,771 surveyed acres in Coffee, GA, 92% are strongly acidic (below 5.5), 9% are moderately acidic (5.5-6.5). Mapped soils run from pH 4.6 to 6.5, a spread of 1.9 units across 54 soil components. 92% of the land falls in one class, so the county figure is a fair first guess for most yards here.

Clay, organic matter and rates

Topsoil here averages 7.8% clay and 2.35% organic matter, which this site treats as sandy. Moving it one pH unit takes about 3 lb of lime or 1.2 lb of sulfur per 100 sq ft. None of the mapped components carry free carbonate.

Coffee against the rest of Georgia

pH 5.18 is 0.15 below the Georgia median of 5.33. 27 of 159 Georgia counties have more acidic topsoil. Nationally it is more acidic than the US county median of 6.05.

Closest in pH within the state: Bryan (5.15), Houston (5.15), Ben Hill (5.18), Cherokee (5.18), Evans (5.18), Peach (5.18), Whitfield (5.18), Lowndes (5.19).

The range in Georgia runs from Clinch at 4.64 to Elbert at 5.68; Coffee sits 52% of the way up.