Mid-Season Maintenance and base-feeding fertilizer for Greens, Tees, and Sportsfields 

Suståne® 10•2•10+Fe granular

Suståne 10-2-10 +Fe Natural Based Fertilizer provides 1:1 N:K and 80% slow-release nitrogen, organic nitrogen and methylene urea in a greens ready Fine Grade (100 SGN). Suståne 10-2-10+Fe combines Suståne organic compost base with iron sulfate organically chelated during the active aerobic composting phase providing for slow-release iron for enhancing chlorophyll production and turf color. 

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 Suståne 10•2•10+Fe
  • Fast green up from 20% quick release water-soluble N
  • Built on Suståne compost base with the standard 1:1 N to K ratio to match plant uptake requirements
  • Will not burn or cause excessive top growth
  • Homogenous 1 mm particles - each particle contains all components
  • Fast, uniform coverage penetrates into turf canopy with light irrigation
  • Low Biochemical Oxygen Demand (B.O.D) resulting in less soil oxygen loss through the critical summer months

Cool Season Grasses

Golf course fairways, roughs, collars, sportsfields, parks, and lawncare 

Standard maintenance rates, Spring, Summer, Fall:
5 lb. to 10 lb. per 1000 ft2 (2.5 kg to 5 kg per 100 m2) or 3.25 kg covers 100 m2 (325 kg per hectare) per application. 

Warm Season Grasses

Golf course fairways, roughs, collars, sportsfields, parks, and lawncare

Standard maintenance rates: 
5 lb. to 10 lb. per 1000 ft2 (2.5 kg to 5 kg per 100 m2) or 3.25 kg covers 100 m2 (325 kg per hectare)  at frequency determined by clipping yield. 


Turf Coverage

50 lb. covers 5,000 ft2 @ 1 lb N per 1,000 ft2.  (44 lb. N per acre)
22.67 kg covers 465 m2 @ 0.5 kg N per 100 m2 (50 kg N per hectare)
10 lb. per 1000 ft2 = 5 kg per 100 m2 

50-lb. bag covers 5,000 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 10.0 1 436 44
Half Rate 5.0 0.5 218 22
Quarter Rate 2.5 0.25 109 11
22.67-kg. bag covers 463 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 4.9 49 4.9 488 48.8
Half Rate 2.4 24 2.4 244 24.4
Quarter Rate 1.2 12 1.2 122 12.2


Store in a cool, dry place. Do not expose to moisture or extreme temperatures.   

NOTE: Adjust fertilizer program for local conditions and requirements

Item # 
Suståne 10-2-10+Fe
Package Size Units / Pallets
22.68 kg bags
40-40-1175 (international)

50 lb. bags
1-ton tote
22.68 kg bags 

40 bags / pallet
1 tote / pallet
44 bags / ISPM pallet 


Total Nitrogen (N) 10%
1.1% Ammoniacal Nitrogen
4.7% Water Soluble Nitrogen*
0.8% Urea Nitrogen
3.4% Other Water Soluble Nitrogen*
Available Phosphate (P2O5) 2%
Soluble Potash (K2O) 10%
Calcium (Ca) 1%
Sulfur (S) 5%
Iron (Fe) 2%

Derived from aerobically composted turkey litter, ammonium sulfate, iron sulfate, sulfate of potash, and methylene urea.
*8.1% slowly available nitrogen from aerobically composted turkey litter and methylene urea.