In this lesson, we will begin with soil texture – a fundamental inherent property that strongly influences many other soil processes. In addition, you will find guidance and video instructions for exploring further physical, chemical, and biological properties. The aim is not to classify your soil as good or bad. Instead, the aim is to strengthen your observation skills, develop your scientific reasoning, and deepen your understanding of soil as a dynamic, living system.

Soil texture describes the relative proportions of sand, silt, and clay in soil and is one of its most important physical properties. Now it’s your turn to explore it yourself. Watch the video instructions, grab a hand shovel or spoon, and take a stroll outside. 

You can classify your soil based on your observations. The horizontal lines in the table show whether you can form a ribbon from your soil and its length. The vertical columns indicate how gritty the soil feels. 


VERY GRITTY

INTERMEDIATE

VERY SMOOTH

NO RIBBON

sand / loamy sand

X

X

< 2.5 cm RIBBON

sandy loam

loam

silt loam

2.5 - 5 cm RIBBON

sandy clay loam

clay loam

silty clay loam

> 5 cm RIBBON

sandy clay

clay

silty clay


If you prefer written instructions, you can consult the following resources. They provide step-by-step guidance for three slightly different methods to determine soil texture by feel: