Soil pH in Greenwood, KS: Lime or Sulfur?

Typical topsoil pH in Greenwood, KS

Typical topsoil in Greenwood, KS is pH 6.59, already right for vegetable garden (6-7). Test before adding anything.

What Greenwood needs, by plant

• Already in range: lawn (cool-season grass), vegetable garden, tomatoes, roses.
• Just outside, test first: strawberries (off by 0.1), pink hydrangeas (off by 0.1).
• Beds or pots instead: potatoes, blueberries, azaleas and rhododendrons, blue hydrangeas.

What to do next

If your test lands near 6.59, you can skip lime and sulfur for lawn (cool-season grass), vegetable garden, tomatoes, strawberries, roses, pink hydrangeas.

How mixed the soil is

Of the 717,155 surveyed acres in Greenwood, KS, 59% are moderately acidic (5.5-6.5), 34% are alkaline (above 7.3), 6% are near neutral (6.5-7.3). Mapped soils run from pH 5 to 7.9, a spread of 2.9 units across 224 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 31.3% clay and 2.94% organic matter, which this site treats as clay. Moving it one pH unit takes about 11.5 lb of lime or 3.4 lb of sulfur per 100 sq ft. 34% of mapped components carry free carbonate (lime already in the ground), enough that sulfur gets neutralised before it does much.

Greenwood against the rest of Kansas

pH 6.59 is right at the Kansas median of 6.57. 53 of 105 Kansas counties have more acidic topsoil. Nationally it is more alkaline than the US county median of 6.05.

Closest in pH within the state: Lyon (6.51), Cowley (6.55), Barton (6.57), Pottawatomie (6.57), Marion (6.59), Pawnee (6.6), Geary (6.64), Harper (6.64).

The range in Kansas runs from Cherokee at 5.95 to Wallace at 7.51; Greenwood sits 41% of the way up.