• elemental
Nitrogen Total (N) 18%
Ammoniacal nitrogen (NH4-N) 1.3%
Urea nitrogen (Ur-N) 8.2%
Ureaformaldehyde (MU-N) 8.5%
Phosphorus (P) 2.6%
Water soluble 2.2%
Potassium (K) 14.9%
Water soluble 14.9%
Magnesium (Mg) 1.2%
Iron (Fe) 0.50%
Manganese (Mn) 0.10%
Copper (Cu) 0.020%
Molybdenum (Mo) 0.001%
Zinc (Zn) 0.020%



8-10 Weeks

Granule size


Avg Recommended Rate

25 g/m²

Product Dispersal

2-3 days

Recommended Rate

20.00 - 30.00 g/m²

Turf Response

7 days

Sierraform GT All Season

All Season


  • Advantages
  • Description
  • Directions for use
  • Spreader settings
  • Balanced NPK fertilizer to use from spring to autumn
  • Great for using after aeration to stimulate growth
  • Enhances turf health and recovery from stress
  • Contains Magnesium to improve turf color and mask stress symptoms

SierraformGT All Season 18-6-18+MgO is a homogenous, NPK fertilizer with ICL's patented MU2 and SilK coating technologies. It contains a full trace element package and Magnesium.

The trace elements enhance turf health and assists in stress recovery. The Magnesium content improves turf color masks stress symptoms. It provides good nutrient release for 6 – 8 weeks in cooler temperatures, and is the perfect fertilizer to use anytime between spring and autumn. It is particularly suited for use on fine turf areas.

Directions for use

Apply to dry foliage. Water if no rain has fallen 1 – 2 days after applications. Irrigation will aid in dispersion and limit risk of mower pick-up on low cut surfaces. Watering-in after application will limit footprints. Avoid applications in frosty and drought conditions.

Delay any vertical cutting a/o grooming until 3 days after application; allows granules to properly disperse. The Nitrogen release is significantly lessened when soil temperatures are below 10ºC.

If spilled on pavement, concrete, etc, make sure to brush off immediately as the product can cause discoloration.

Contains Iron:
Do not apply in case of risk of contact with concrete, marble, stone, fabric, swimming pool, ... - If spilt on paving slabs, concrete, clothes etc. brush off immediately, as product may cause discolorations

Spreader settings
Spreader type

Application method

Cone setting

Spreader width (m)

Application rate g/m2


Application rate g/m2


Application rate g/m2


Rotary spreader

1x pass





 M 1/2

SR-2000 or Accupro 2000

 2x pass



 I 1/2

 J 1/2


Drop Spreader

1x pass 







2x pass 






SierraformGT All Season 18-6-18+MgO (6 – 8 weeks) contains both slow release Nitrogen and slow release Potassium, along with normal release NPK in a single compound micro-granule.

Suggested period of use

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec