What testing is done to ensure plastic planters are non-toxic to plants and soil?

To ensure plastic planters are non-toxic to plants and soil, manufacturers conduct several key tests. First, material composition analysis checks for harmful chemicals like BPA, phthalates, or heavy metals. Second, leaching tests evaluate whether toxins seep into soil or water under various conditions. Third, biodegradability and UV resistance tests assess long-term safety. Many brands also obtain certifications like FDA, LFGB, or OEKO-TEX to verify non-toxicity. Additionally, some perform plant growth trials to monitor health impacts. Always look for planters labeled as "food-grade" or "eco-safe" for guaranteed safety.