Over 60% of urban gardeners report corrosion issues within 2 years of purchasing metal planters (Urban Gardening Report 2024). Our team observed in 2025 cases that salt buildup from fertilizers accelerates pitting in substandard stainless steel flowerpots. The good news? Proper care can triple their lifespan.
Feature | Grade 304 | Grade 201 |
---|---|---|
Corrosion Resistance | Excellent | Moderate |
Chloride Tolerance | Up to 200ppm | Up to 50ppm |
Ideal Use | Coastal areas | Indoor gardens |
⚠️ Never use abrasive pads on brushed finishes – this removes the protective oxide layer. Instead, try vinegar-soaked microfiber cloths.