health
February 3, 2026
Houseplant hacks: can oats and Epsom salts pep up a plant?
Social media suggests that the combination is a superfood for tired plants. The reality is mould, gnats and the sour smell of rot
TL;DR
- Social media suggests using oats and Epsom salts as a fertilizer for houseplants.
- The hack claims oats enrich soil and Epsom salts provide magnesium for green leaves.
- Testing showed the oat and Epsom salt mixture resulted in mold, fungus gnats, and a sour smell.
- The mixture did not improve plant growth compared to normal feeding.
- Oats decompose and encourage mold and pests before providing benefits.
- Epsom salts can cause salt buildup and nutrient imbalance if used unnecessarily.
- Peat-free compost and balanced liquid fertilizer are recommended for plant care.
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