Grigg Brothers® Proven Foliar™ products are specifically designed for foliar application and foliar absorption. All products contain mineral specific facilitators which aid penetration into plant cells, effectively translocate to sites of action, and provide all or most of the nutrients needed. Equally dynamic products are available in the GreenSpec™ line of granular fertilizers and soil amendments. GreenSpec™ fertilizers do not contain any waste material. Each ingredient has its purpose as either a plant nutrient, or as an ingredient for soil improvement.