Soil pH in Rush, KS: Lime or Sulfur?

Typical topsoil pH in Rush, KS

Typical topsoil in Rush, KS is pH 6.8, already right for vegetable garden (6-7). Test before adding anything.

What Rush needs, by plant

• Already in range: lawn (cool-season grass), vegetable garden, tomatoes, roses.
• Sulfur: potatoes 3 lb/100 sq ft over 2 applications; strawberries 1.8 lb/100 sq ft; blueberries 4.1 lb/100 sq ft over 3 applications; azaleas and rhododendrons 3.5 lb/100 sq ft over 2 applications; blue hydrangeas 3.5 lb/100 sq ft over 2 applications; pink hydrangeas 1.2 lb/100 sq ft.

What to do next

If your test lands near 6.8, you can skip lime and sulfur for lawn (cool-season grass), vegetable garden, tomatoes, roses.

How mixed the soil is

Of the 459,285 surveyed acres in Rush, KS, 56% are moderately acidic (5.5-6.5), 29% are alkaline (above 7.3), 15% are near neutral (6.5-7.3). Mapped soils run from pH 6.3 to 8.2, a spread of 1.9 units across 118 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 24.1% clay and 2.26% 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. 29% of mapped components carry free carbonate (lime already in the ground).

Rush against the rest of Kansas

pH 6.8 is 0.23 above the Kansas median of 6.57. 64 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: Ford (6.68), Riley (6.68), Wabaunsee (6.68), Norton (6.77), Jewell (6.83), Ness (6.84), Phillips (6.84), Lincoln (6.88).

The range in Kansas runs from Cherokee at 5.95 to Wallace at 7.51; Rush sits 54% of the way up.