It says “biodegradable coating” — is it truly safe for the environment?

Yes, you can rest assured. The coating material of HI-COTE is made from a biodegradable polymer resin that is 100% broken down by soil microorganisms. It solves the longstanding problem of conventional slow-release fertilizers leaving plastic shells in paddy fields after their effect is spent, eliminating concerns about soil contamination and microplastic generation.