Cat Using Houseplants as Litter Box: Soil Flush and Prevention

Immediate Remedy

Cat urine is acidic and lowers soil pH, blocking nutrient uptake. Flush the soil with lime water: ½ cup horticultural lime per gallon of water. Pour through until it drains freely. This neutralizes acidity and reduces odor.

Long-Term Prevention

This is a behavioral issue, not a plant issue. Cover soil with large river rocks, use citrus-scented deterrents, provide more litter boxes, or restrict plant access.