Soil pH in Eureka, NV: Lime or Sulfur?

Typical topsoil pH in Eureka, NV

Typical topsoil in Eureka, NV is pH 7.73 and calcareous, so sulfur won't lower it for long. For vegetable garden, choose alkaline-tolerant varieties and add compost rather than fighting the soil.

What Eureka needs, by plant

• Beds or pots instead: lawn (cool-season grass), vegetable garden, tomatoes, potatoes, strawberries, roses, blueberries, azaleas and rhododendrons, blue hydrangeas, pink hydrangeas.

What to do next

If your test confirms pH near 7.73, consider raised beds for anything acid-loving; with 42% of soils here carrying free lime, sulfur will not hold.

How mixed the soil is

Of the 2,484,291 surveyed acres in Eureka, NV, 58% are alkaline (above 7.3), 39% are near neutral (6.5-7.3), 3% are moderately acidic (5.5-6.5). Mapped soils run from pH 4.8 to 10.1, a spread of 5.3 units across 1,197 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 16.9% clay and 1.59% 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. 42% of mapped components carry free carbonate (lime already in the ground), enough that sulfur gets neutralised before it does much.

Eureka against the rest of Nevada

pH 7.73 is 0.05 below the Nevada median of 7.78. 6 of 17 Nevada counties have more acidic topsoil. Nationally it is more alkaline than the US county median of 6.05.

Closest in pH within the state: Storey (7.25), Washoe (7.25), Lyon (7.58), Elko (7.69), Lander (7.77), Humboldt (7.78), Lincoln (7.87), Mineral (7.91).

The range in Nevada runs from Carson City at 6.85 to Esmeralda at 8.33; Eureka sits 59% of the way up.