Troubleshooting & Pests
9 min read
Mulching with Crushed Oyster Shells: How Marine Grit Transforms Plant Health
Crushed oyster shell is a time-tested botanical mulch that stabilizes soil pH, rectifies calcium deficiencies, and mechanically repels pests like slugs and snails. In this definitive guide, discover ideal grit fractions, cellular mechanisms, and targeted top-dressing strategies for succulents and indoor specimens.