Sigma 4-4-4 Bio Fine Grade

With Value-Added Biologicals

This premium grade micro granular fertilizer has a size grade number of 110 and contains only 100% organic nutrient rich ingredients infused with value added biologicals. Both humic acids and microroganism development work to strength plant's roots for greater absorption of water and disease-fighting elements. Recommended for spring and fall aeration recovery, midsummer stress management, winter dormant feeding, cool season over-seeding nutrition, and warm season transition.

Available Packaging:

50Lb.Poly Bag (22.68 KG) 2000 Lb.Totes (907 KG) Bulk Load

Guaranteed Analysis

Total Nitrogen (N) 4.0%
0.64% Water Soluble Nitrogen
3.36% Water Insoluble Nitrogen
Available Phosphate (P2O5) 4.0%
Soluble Potash (K2O) 4.0%
Calcium (Ca) 9.0%
Iron (Fe) 0.2%

Derived from Processed Poultry manure, bone meal, feather meal and sulphate of potash.

Humic Acids 3.0%
Beneficial Bacteria 2,800,000 CFU/Lb
Endomycorrhizae 6.2 Prop/Lb.
Trichoderma 480,000 CFU/Lb

Also available without BIO Package (beneficial bacteria, endomycorrhizae, trichoderma)

Application Rates



Medium: 19 lb. / 1000 sq ft. (0.75 lb. N)


High: 25 lb. / 1000 sq ft.(1.0 lb. N)

Golf Course

Low Rate:

12.5 lb. / 1000 sq ft.(0.50 lb. N)

Medium Rate:

19 lb. / 1000 sq ft. (0.75 lb. N)

High Rate:

25 lb. / 1000 sq ft. (1.0 lb. N)


Low Rate:

(Examples - peas, beans) Incorporate 1000 lb. per acre 2-3 weeks prior to planting.

Medium Rate:

(Examples - asparagus, beet, carrot, melon, pepper, cauliflower, broccoli, brussels sprouts, and celery) Incorporate 2500 lb. per acre 2-3 weeks prior to planting.

High Rate:

(Examples - onion, sweet corn, potato, tomato) Apply 2500 lb. per acre at planting then broadcast or band additional fertilizer after plants are well established or per organic certification rules.

Tree & Palm

Rate based on 1” of trunk diameter (caliper). Example: for 10” trunk diameter (caliper) multiply label rate by 10.


Mix with soil in bottom of holes priorto transplanting. Apply 6.0 lb. at Transplanting.


Apply 12.0 lb. at Transplanting.


Low Rate:

(for heavy substrates with porosity < 60%)


30 lb. per cubic yard of media


49 lb. per 1000 sq. ft.

Medium Rate:

(for most nursery stock and foliage plants)


45 lb. per cubic yard of media


86 lb. per 1000 sq. ft.

High Rate:

(for light substrates with porosity > 80%)


56 lb. per cubic yard of media


124 lb. per 1000 sq. ft.

Container Sizes

1 Gallon:  
Low Rate: 56 grams High Rate: 112 grams
2 Gallon:  
Low Rate: 112 grams High Rate: 225 grams
3 Gallon:  
Low Rate: 169 grams High Rate: 356 grams
5 Gallon:  
Low Rate: 225 grams High Rate: 488 grams
7 Gallon:  
Low Rate: 338 grams High Rate: 731 grams
10 Gallon:  
Low Rate: 413 grams High Rate: 881 grams
15 Gallon:  
Low Rate: 450 grams High Rate: 938 grams
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