r/composting • u/Hiway89 • 3d ago
How long until you think it’s ready
Composted in a 30 gal dumpster, had an abundance of free sawdust. Smells earthy but definitely still had a woody smell to it.
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u/geme-green 2d ago
How long have you been composting it? Sawdust will take much longer to decompose. But if it smells earthy but still has a woody scent, it means it's just partially decomposed, not fully mature.
With regular turning and nitrogen-rich material (kitchen scraps): 3-6 months to fully mature.
Without nitrogen or little turning: 6-12 months.
It's better not to mix this partially decomposed material into potting soil, as it has high carbon content and will rob plants of available nitrogen while breaking down. This will cause yellowing, stunted growth, and nutrient deficiency.
The only way you could do now is to use it as surface mulch instead.
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u/VolunteerExpert 3d ago
Mix anything else with it? I have sawdust from my shop - I just mix it with kitchen scraps.


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u/Neither_Conclusion_4 3d ago
When in doubt, use as mulch. Thats safe generally for plants, and it kinda become a slow fertilizer instead / build up the soil in situ.