Measuring Grass Height
How Measuring Grass Height is Used in Football PQS Assessments
Assessing Grass Height
🗝️ A Grass Height Measuring Prism (as pictured), ruler or tape measure can be used to measure grass height, this is typically done from the base of the grass sward to the grass leaf tip. If grass height is not uniform the measurement should be based on the average height across the inspection area.
Measuring against PQS Tolerances
🗝️ Different sports have recommended grass height ranges. Measuring height confirms the pitch is cut to a level that matches the sport’s rules and expectations.
Typical examples:
Football: approx. 25–35 mm
Rugby: approx. 25–60 mm
Cricket outfields: approx. 10–20 mm
Helps Assess Ball Speed and Behaviour
🗝️ Grass height influences:
Ball roll (shorter uniform grass = increased ball roll/speed)
Ball bounce (firmer and shorter = higher bounce)
Friction and drag (longer grass reduced ball roll/speed)
Indicates Mowing Quality and Surface Consistency
🗝️ Measuring grass height across multiple areas helps identify:
Uneven mowing
High spots or scalping
Shading or growth problems
Differences between high-traffic and low-traffic areas
💡 Consistent height across the pitch is a strong indicator of a good mowing regime.
Helps Monitor Turf Health and Wear Tolerance
🗝️ Grass height also reflects how well the pitch is coping with:
- Wear
- Nutrient levels
- Drought
- Disease
- Shading
- Frequency of mowing
💡 If an area cannot maintain the target height, it may signal deeper agronomic issues (e.g., compaction, poor fertility, thatch).
Used to Verify Compliance With Mowing Regimes
🗝️ PQS encourages maintenance practices that are consistent and sufficient to meet the desired standard. Measuring the height helps ensure:
- Mowing is regular enough and the desired height is being achieved
- No more than one-third of the leaf is removed at a time
- Growth is controlled appropriately for the season
- Machinery is calibrated and blades are sharp