Understanding ICL Mowing Height Icons

Choosing the right fertilizer for your mowing height

When choosing an ICL granular fertilizer, you may see a mowing height icon showing <6 mm, >6 mm and >12 mm.

The highlighted section or sections show the mowing heights the product is suitable for.

The principle is simple: the shorter the turf, the finer the fertilizer granule needs to be.

What do the mowing height icons mean?

The mowing height icons can be shown in four ways:

• All turf heights: all three sections are highlighted, meaning the product is suitable at any mowing height
• <6 mm: <6 mm section is highlighted, meaning the product is suitable for closely mown turf
• >6 mm: the >6 mm and >12 mm sections are highlighted, meaning the product is suitable for turf maintained above 6 mm
• >12 mm: only the >12 mm section is highlighted, meaning the product is intended for turf maintained above 12 mm

The icons provide a quick way to see which mowing height ranges each product is suitable for.

All turf heights

When all three sections are highlighted, the product is suitable for turf at all mowing heights.

• Typical use: all managed turf, including closely mown surfaces
• Product examples: Greenmaster Pro-Lite and Sierraform GT
• Key point: suitable for all mowing heights

<6 mm: closely mown turf

Products for turf below 6 mm use particularly fine granules suited to closely mown surfaces.

• Granule size: approximately 0.5–1.7 mm
• Typical use: golf greens and other closely mown turf
• Product examples:  Selected Gronamic products
• Key point: formulated to meet the requirements of turf below 6 mm, but can also be used at higher mowing heights

Closely mown turf requires a fine fertilizer granule suited to the short, dense turf canopy.

>6 mm: sports pitches, fairways and other quality turf

When the >6 mm and >12 mm sections are highlighted, the product is suitable for turf maintained above 6 mm.

• Granule size: approximately 1–2.5 mm
• Typical use: sports pitches, golf fairways, tees and other quality turf
• Product examples: ProTurf, Sierrablen Plus and Sportsmaster CRF Mini
• Key point: the product is suitable for turf above 6 mm, including turf maintained above 12 mm

>12 mm: longer turf

When only the >12 mm section is highlighted, the product is intended for longer turf maintained above 12 mm.

• Granule size: approximately 2–4.5 mm
• Typical use: longer turf and less intensively managed areas
• Product examples: Sierrablen, Sportsmaster and Sportsmaster CRF
• Key point: the larger granule is intended for turf maintained above 12 mm

Why does mowing height matter?

Granule size needs to suit the height and density of the turf canopy.

Fine granules distribute and settle more effectively in closely mown turf, while larger granules are suitable as mowing height increases.