A natural based fertilizer with a synergistic blend of plant biostimulant, humic acid, and mycorrhizae ideal for core aerification, sodding and turf establishment. 


Bolster 4-4-4 plus Iron
Recommended Use

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.

Description

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. 

Professional Grade 

Suståne products are derived from biologically stable humus-rich compost and contain both water soluble nitrogen (WSN) and slow release nitrogen (SRN), beneficial microbiology, and all 17 elements essential for plant photosynthesis. With a near-neutral pH, a low salt index and low ammonium nitrogen percentage, Suståne will not cause seedling stress or plant fertilizer “burn”. Suståne products increase soil cation exchange capacity (CEC) by supplying humates and stable organic matter. Suståne’s organic and blended natural fertilizers provide all soil types with additional buffering capacity, allowing for more consistent and productive growth.

Benefits of BOLSTER 4-4-4 plus Iron
  • Provides quick green up followed by six to eight weeks of even color and growth.
  • Strengthens plants tolerance against hot, dry conditions.
  • Improves buffering against changes in soil pH.
  • Increases the soil’s ability to suppress plant pathogens and soil contaminants.
  • Increases soil porosity and stability for greater root development and water holding capacity.
  • Contains beneficial V.A. Mycorrhizae - see below.
  • Contains Ascophyllum nodosum seaweed.
  • BOLSTER G is extremely safe and will not burn or discolor turfgrass.
  • Reduces transplant shock.
Vesicular Arbuscular Mycorrhizal Fungi

“V.A. Mycorrhizae” refers to the species of fungi that forms beneficial associations with most plant species. It is a “Facilitator” that brings nutrients to plant roots, exudes “Glomalin” to improve soil structure and actually fill up available entry sites along roots to inhibit pathogens from attacking. Mycorrhizal fungi are a critical component of healthy soils. It affects available soil nutrition, plant carbon transfer, and increases water and P utilization and the physical structure of the soil and the numbers of and types of other organisms present in the soil. BOLSTER contains 3.52 propagules per gram of Suståne's proprietary blend of four different species of V.A. Mycorrhizae.

Applications and Rates*

Turf Coverage

25 lb. covers 1,000 ft2 @ 1 lb N per 1,000 ft2
1,100 lb. per acre provides 44 lb N per acre.
11.3 kg covers 93 m2 and 125 g covers 1 m2@ 0.5 kg N per 100 m2.
1,250 kg per hectare provides 50 kg N per hectare.

IMPERIAL
50-lb. bag covers 2,000 sq. ft. at 1 lb. N per 1,000 sq. ft.
Standard Appl. Rates Appl. Rate Lb. Product per 1,000 ft.2 Supplies Lb. N per 1,000 ft.2 Appl. Rate Lb. Product per Acre Supplies Lb. N Per Acre
Full Rate 25 1 1090 44
Half Rate 12.5 0.5 545 22
Quarter Rate 6.25 0.25 272 11
METRIC
22.67-kg. bag covers 186 sq. m. at 0.5 kg. N per 100 sq. m.
Standard Appl. Rates Appl. Rate Kg. Prod. Per 100 m2 Appl. Rate Grams Prod. Per 1 m2 Supplies Grams N Per 1 m2 Appl. Rate Kg. Prod. Per Hectare Supplies kg. N Per Hectare
Full Rate 12.2 122 4.9 1220.4 48.8
Half Rate 6.1 61 2.4 610.2 24.4
Quarter Rate 3.1 31 1.2 205.1 12.2

Core Aerification, Vertical Mulching, or Vertical Aeration

Apply 0.5 lb. to 1 lb. N/1,000 ft2 (6 kg to 12 kg/100 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.

*NOTE: Adjust fertilizer program for local conditions and requirements.

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 

GUARANTEED ANALYSIS

Total Nitrogen (N) 4%
0.4% Ammoniacal Nitrogen
0.4% Other Water Soluble Nitrogen
3.2% Water Soluble Nitrogen*
Available Phosphate (P2O5) 4%
Soluble Potash (K2O) 4%
Calcium (Ca) 4%
Magnesium (Mg) 0.5%
Sulfur (S) 1%
Iron (Fe) 3%

Derived from aerobically composted turkey litter, feather meal, sulfate of potash and ferrous sulfate.
*3.2% slowly available nitrogen from aerobically composted turkey litter and feather meal.

Also contains non-plant food ingredients:

Humic Acid
(derived from leonardite and aerobically composted turkey litter)     
                 5%
Seaweed Extract (Ascophyllum nodosum) 1%
Vesicular Arbuscular Mycorrhizae 1.75%
Guaranteed minimum 3.52 propagules per gram:
   Rhizophagus irregularis
   Rhizophagus clarus
   Septoglomus deserticola
   Claroideoglomus etunicatum

2.47 spores/g
0.35 spores/g
0.35 spores/g
0.35 spores/g

92.25% Total Fertilizer Ingredients