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Soil texture groups

Adapted To Coarse Textured Soils: Can this plant establish and grow in soil with a coarse textured surface layer?
Adapted To Medium Textured Soils: Can this plant establish and grow in soil with a medium textured surface layer?
Adapted To Fine Textured Soils: Can this plant establish and grow in soil with a fine textured surface layer?

VegSpec soil texture groups and corresponding soil texture classes.

VegSpec soil texture group

Corresponding soil texture classes from the Soil Texture Triangle

Course

Sand

Course sand

Fine sand

 

Loamy course sand

Loamy fine sand

Loamy very fine sand

 

Very fine sand

Loamy sand

 

Medium

Silt

Sandy clay loam

Very find sandy loam

 

Silty clay loam

Silt loam

Loam

 

Fine sandy loam

Sandy loam

Course sandy loam

 

Clay loam

 

 

Fine

Sandy clay

Silty clay

Clay

Source: The soil texture classes are from the Soil Science Society of America http://www.soils.org/ An NRCS team partitioned the soil textures into the 3 groups.

Note: The United States Department of Agriculture (USDA) defines particle sizes as:
sand 2.0 mm - 0.05 mm in diameter
silt 0.05 mm - 0.002 mm in diameter
clay less than 0.002 mm in diameter
 
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