ORGANIC TURF GROW UNDERLAY 50 50 CUBE 1 1 Natural Blend Pro TurfHub Natural Blend 75 Synthetic Turf Resources Turf Blend Melbourne BGS Organic Soils Smart Stone Landscape Supplies ORGANIC TURF GROW UNDERLAY 50 50 CUBE 1 1. Our Organic Underturf Soil Blend will give your turf a running start with a premium blend to help nourish your root system and give your turf that emerald green hue all year round. This under turf has excellent moisture retention capabilities and is easy to spread. It is finely screened and meets all USGA Sand Specifications; so you can be assured of its quality and consistency. Price is per m3 Certifications: Certified to the Australian Standard AS4419 Meets all USGA Sand Specifications Price is per m3