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Sour Soil Smell: Overwatering and Anaerobic Conditions

Strong soil odor = anaerobic decay from constant wetness. Water only when soil is dry and pot feels light. Empty saucers within an hour. Scrub saucers. Light lime dusting (1 tsp per 4" pot) can sweeten soil, but don't overdo. Lysol spray on surface helps odor.

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