Soil pH in Charlottesville City, VA: Lime or Sulfur?

Typical topsoil pH in Charlottesville City, VA

Typical topsoil in Charlottesville City, VA is pH 5.25, too acidic for vegetable garden. Expect roughly 9.1 lb of lime per 100 sq ft, but only after a soil test confirms it.

What Charlottesville City needs, by plant

• Already in range: potatoes, blueberries, azaleas and rhododendrons, blue hydrangeas.
• Lime: lawn (cool-season grass) 9.1 lb/100 sq ft over 2 applications; vegetable garden 9.1 lb/100 sq ft over 2 applications; tomatoes 9.1 lb/100 sq ft over 2 applications; strawberries 5.6 lb/100 sq ft over 2 applications; roses 9.1 lb/100 sq ft over 2 applications; pink hydrangeas 7 lb/100 sq ft over 2 applications.

What to do next

If your test confirms pH near 5.25, spread about 91 lb of ground limestone per 1,000 sq ft of vegetable bed in 2 doses, ideally in fall.

How mixed the soil is

Of the 2,619 surveyed acres in Charlottesville City, VA, 72% are strongly acidic (below 5.5), 28% are moderately acidic (5.5-6.5). Mapped soils run from pH 4.6 to 5.8, a spread of 1.2 units across 59 soil components. 72% 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 20.3% clay and 1.73% 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. None of the mapped components carry free carbonate.

Charlottesville City against the rest of Virginia

pH 5.25 is right at the Virginia median of 5.24. 67 of 127 Virginia counties have more acidic topsoil. Nationally it is more acidic than the US county median of 6.05.

Closest in pH within the state: Patrick (5.24), Roanoke (5.24), Lunenburg (5.25), Pulaski (5.25), Bland (5.26), Caroline (5.26), Portsmouth City (5.26), Botetourt (5.27).

The range in Virginia runs from Newport News City at 4.76 to Poquoson City at 6.36; Charlottesville City sits 31% of the way up.