Q: What is the compost additive?
A compost accelerator like this one is an organic blend that feeds the microorganisms responsible for breaking down garden and kitchen waste, helping establish and sustain steady decomposition.
SG503 - Compost Activator

Compost piles that are slow to heat or decompose often lack sufficient microbial activity.
This organic blend feeds the microorganisms responsible for breaking down garden and kitchen waste, helping establish and sustain steady decomposition. It supplies nitrogen and phosphorus to spur microbial activity, while humic material, yeast and sucrose support ongoing microbial growth. Kelp and alfalfa encourage earthworms to work through the pile, improving aeration and adding castings, while lime and sand help balance pH and produce a finer, more workable compost.
For outdoor composting, apply 250ml (1 cup) per m³ (35 ft³) evenly over the pile and mix thoroughly. Turn regularly, keep moist, and reapply every 4 weeks or as needed.
Comes in a 4 lb (1.8kg) container.
Made in Canada.
A compost accelerator like this one is an organic blend that feeds the microorganisms responsible for breaking down garden and kitchen waste, helping establish and sustain steady decomposition.
Apply 250mL (1 cup) per cubic metre of material, mix it evenly through the pile, then turn the pile regularly and keep it moist.
It combines nitrogen and phosphorus with humic material, yeast and sucrose, along with kelp, alfalfa, lime and sand to balance pH.
Reapply about every 4 weeks, or as needed, while continuing to turn the pile and keep it moist.
| Materials | Kelp; alfalfa; lime; sand; nitrogen; phosphorous; humic material; yeast; sucrose |
| Weight | 4lb (1.8kg) |
| Volume | 4lb (1.8kg) |
| Includes | Compost activator |
| Package Quantity | 1 item |
| Country of Origin | Canada |
| Warranty | Lee Valley Satisfaction Guarantee |

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Compost Activator
Compost piles that are slow to heat or decompose often lack sufficient microbial activity.
This organic blend feeds the microorganisms responsible for breaking down garden and kitchen waste, helping establish and sustain steady decomposition. It supplies nitrogen and phosphorus to spur microbial activity, while humic material, yeast and sucrose support ongoing microbial growth. Kelp and alfalfa encourage earthworms to work through the pile, improving aeration and adding castings, while lime and sand help balance pH and produce a finer, more workable compost.
For outdoor composting, apply 250ml (1 cup) per m³ (35 ft³) evenly over the pile and mix thoroughly. Turn regularly, keep moist, and reapply every 4 weeks or as needed.
Comes in a 4 lb (1.8kg) container.
Made in Canada.
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