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Enhance Golf Course Turf with Bolster Granular®

4•4•4 plus Iron Turf Establishment and Renovation


Premium Natural Fertilizer for Healthier, Greener, and Stronger Turf

  • Ideal for recovery from aerification, sodding, and turf establishment
  • Promotes rapid root development
  • Improved deep greening with 3% chelated iron
  • Improves soil health with V.A. Mycorrhizae and humic acid
  • Proven safe, simple, and effective worldwide

all fields required

Bolster Granular 4-4-4 25lb and 50lb bag image

BOLSTER GRANULARTM 4-4-4 plus 3Fe plus beneficial fungi and plant supplements

contains a powerful, synergistic blend of mycorrhizal fungi, Suståne® organic base 4-4-4 plus 3% iron and plant supplements to promote rapid root development. Arbuscular Mycorrhizal Inoculant contains beneficial endomycorrhizal fungi, which promotes greater access of plant roots to soil nutrients and water. BOLSTER GRANULAR can be used in all turf and landscape plantings.

Recovery from Core Aerification, Vertical Mulching, or Vertical Aeration:

Apply 25 - 50 lb. per 1,000 ft2. (122 - 244 grams per M2) after aerifcation. Drag fertilizer into core holes.

Turf Establishment

Pre-plant: Broadcast and incorporate into top 4 in. (10 cm) of soil. 50 lb. per 1,000 ft2 or 2,200 lb. per acre or 25 kg per 100 m2.
Post-plant (45-60 days): Broadcast and water in 25 lb. per 1,000 ft2 or 1,100 lb. per acre or 12 kg per 100 m2.

BOLSTER is recommended for use in all renovation, pre-plant, seeding, and amendment requirements to turfgrass surfaces. It is best applied after aeration, either hollow coring or solid tining to incorporate the product into the soil surface, to maximize the benefits of its microbial diversity and V.A. Mycorrhizae.

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What Our Customers Say ....

“Suståne is excellent…The benefits to the soil and microorganisms have been fantastic on Poa greens for treating fusarium just one time per year.”

- Bath Golf Club, Bath, United Kingdom

“The Olympic event was a huge success, everyone was extremely pleased…I used quite a bit of the 5-2-10 and Bolster (the Bolster liquid was awesome on my Paspalum). Also for some new Zoysia jump zones on sand I incorporated the Sustane’s BOLSTER Granular 4-4-4 into the sand. These areas turned out to be brilliant.”
- Sam Bauer, Track Superintendent
   2008 Olympic Equestrian Event host, Hong Kong Golf Club

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    all fields required

    BOLSTER GRANULAR 4-4-4 plus Iron provides a blend of organic nutrients, beneficial microbiology, bio-stimulants, iron and V.A. Mycorrhizae that improves all turf and landscape plantings. Carefully selected arbuscular mycorrhizal species can promote greater access of plant roots to soil nutrients and water. 3% chelated iron promotes greening and rapid root development and seaweed extract, humic acid, and compost-based microorganisms act as biostimulants that enhance root growth and improve overall plant health. 

    Download Product Label, Spec Sheet, or Certificate
    Item # 
    BOLSTER Granular® 4-4-4 + 3Fe
    Package Size
    Units / Pallets
    FINE GRADE, 100 SGN 
    (1.4 .mm - 0.6 mm) 
    50-30-1321 
    50-30-1311 
    50-30-1375 (international)
    25 lb. bags
    50 lb. bags
    22.68 kg bags 
    		 80 bags / pallet
    40 bags / pallet
    44 bags / ISPM pallet