Soil pH in Milam, TX: Lime or Sulfur?

Typical topsoil pH in Milam, TX

Typical topsoil in Milam, TX is pH 6.94, already right for vegetable garden (6-7). Test before adding anything.

What Milam needs, by plant

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

What to do next

If your test lands near 6.94, you can skip lime and sulfur for lawn (cool-season grass), vegetable garden, tomatoes, roses.

How mixed the soil is

Of the 582,188 surveyed acres in Milam, TX, 39% are near neutral (6.5-7.3), 39% are alkaline (above 7.3), 22% are moderately acidic (5.5-6.5). Mapped soils run from pH 5 to 8.2, a spread of 3.2 units across 83 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 25.1% clay and 1.5% 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. 39% of mapped components carry free carbonate (lime already in the ground), enough that sulfur gets neutralised before it does much.

Milam against the rest of Texas

pH 6.94 is 0.49 below the Texas median of 7.43. 76 of 254 Texas counties have more acidic topsoil. Nationally it is more alkaline than the US county median of 6.05.

Closest in pH within the state: Jack (6.87), Wilson (6.88), Atascosa (6.89), Hunt (6.92), Brazoria (6.98), Kenedy (6.98), Mason (6.99), Frio (7.02).

The range in Texas runs from Hardin at 4.64 to Upton at 8.19; Milam sits 65% of the way up.