Sustane Bolster Liquid BiostimulantBolster® Biostimulant - Liquid Plant Growth Supplement


BOLSTER Plant Biostimulant - Ascophyllum nodosum seaweed, humic acid, and soluble carbohydrates. BOLSTER from Suståne prepares plants for stress conditions, increasing root mass and depth without a flush of top growth. BOLSTER has demonstrated improved drought resistance, increased chlorophyll production, and delayed senescence. It also increases plant salt tolerance in saline soils and irrigation water high in salts; increases plant health and vigor to offset infection of certain diseases and to guard against the effects of plant-parasitic nematodes. Chelated iron and plant hormones in BOLSTER enhance seedling establishment and improve color.

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BOLSTER Plant Biostimulant
Specification Sheet:
Bolster Liquid Biostimulant US Version
Bolster Liquid Biostimulant EU Version

Label (55 gal)

Label (2.5 gal)

Label (1 Liter)


Benefits of BOLSTER Biostimulant

  • Strengthens plants tolerance against hot dry conditions.
  • Improves cold and frost tolerance.
  • Minimizes stress pressure from parasitic nematodes.
  • Increases root mass and depth.
  • Accelerates chlorophyll production.

Always Safe for Plants, People, and the Environment

  • Improves moisture retention
  • Reduces wilting.
  • Bolsters plant tolerance to certain diseases, insects, and nematodes.
  • Increases plant vigor in sub-optimal conditions by reducing the influences of stress factors.

Recommended Use:

Recommended for cool-season and warm-season turfgrasses. May be used on golf courses, sports fields, and other intensively managed turfs. Also for use on new sod installations, new seedling plantings, hydroseeding, and deep root drench for established trees.

Sustane Bolster Biostimulant liquid Trial Images

Dilute with water at 50:1

All application rates are for concentrate prior to dilution with water.

BOLSTER® can be tank-mixed with most fertilizers although the standard quart jar test should be run prior to mixing. This product is intended as a supplement to a regular fertilization program and will not by itself supply all the nutrients normally required by plants.

Shake Well Before Using

Uses & Application:Application Rates
Rate (Oz./1,000 ft2) Rate (Gallons / Acre) Application Timing
Fairways, Sports Fields & Intensively Managed Turf 3.0 1 every 10 weeks
Putting Greens and Tee Boxes 1.5 - 3.0 0.5 - 1.0 Every 2 - 4 weeks
Overseeding 3.0 1 after seeding
Hydroseeding 3.0 1 in mixture with seed
New Seedlings 3.0 1 every 8 weeks after seeding
Sod Installation 3.0 1 2 weeks prior to harvest & after installation
Deep Root Feed for Trees Do NOT Foliar
Apply in holes 4”-24” deep, in a 2’x2’ grid pattern within drip line, at a rate of 2 oz. per one inch diameter at breast height of tree.

Guaranteed Analysis

Sulfur (S) 2.0%
Iron (Fe) 5.0%

Total Plant Nutrition

    Solubilized Seaweed (Ascophyllum Nodosum) 2.0%Humic Acids (from Leondardite) 4.0%

Derived from Iron Sulfate.