Bio Retention Mulch is an organic float resistant product. Various landscaping specifications require non-floatable mulches; especially in bioretention installations. The goal of these mulches is to function like any ornamental mulch (e.g., weed suppression, moisture conservation, etc.), but not to excessively migrate in flooding conditions. Until now, strict float- resistant testing for these mulches did not exist – introducing Z-Best’s 100% Organic Float-Resistant Bio Retention Mulch.