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Sustane logo with image of the two sizes of the Bolster 4-4-4 bag on a background that looks like a sunburst.

BOLSTER 4-4-4 is the Premium Natural Fertilizer for Healthier, Greener, and Stronger Turf

  • Designed for rapid recovery form core aerification and for rapid establishment of sod and new seedings
  • Promotes rapid root development
  • Improved deep greening with 3% chelated iron
  • Improved soil health and plant nutrient uptake with humic acid and VA mycorrhizae
  • Proven safe, simple, and effective worldwide

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Fill out the simple form below, or call 507-263-3003 EXT. 215 or email This email address is being protected from spambots. You need JavaScript enabled to view it.
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Bolster Granular 4-4-4 25lb and 50lb bag image

BOLSTER GRANULAR®  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.

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.

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

Apply 25 - 50 lb. per 1,000 ft2. (122 - 244 grams per M2) after aerification. 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.

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

    Contact Us Today

    To Find a Distributor Near You

    Order now!
    Fill out the simple form below, or call 507-263-3003 EXT. 215 or email [email protected]
    all fields required

    “For rapid turf recovery I highly recommend Bolster Granular 4-4-4 + 3 Fe after each aerification. It’s a complete package that saved time and labor while achieving superior results.”

    Joel T.
    Superintendent
    Atlantis Golf Club

    Download Product Label, Spec Sheet, or Certificate

     

    Learn more about our sportsturf fertilizers

    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