Mulch Materials

Anonymous added on January 29, 2018 | Answered

Can I place old unused canola oil onto a mulch pile?

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Certified GKH Gardening Expert
Answered on January 29, 2018

The oil itself will not be harmful to the soil and plants, but adding oil to mulch or compost can potentially attract pests like rats and mice to the area as they seek out high caloric sources like oil.

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