Actino-Iron 3# Soil Additive - Actino-Iron is a unique granular soil additive that combines the Actinovate organic fungicide with organic iron and humates. Actino-Iron is a professional product that is used by thousands of commercial greenhouses, nurseries and landscapers for controlling root diseases and providing long-term greening. Turn retail potting soil into professional grade by adding Actino-Iron. For organic lawncare and use on veggies, herbs, annuals, perennials, trees and shrubs. Safe for pets, people and the environment. One 9-oz. bag mixes with 3 cubic ft. of potting soil. 9 oz. 3 lb. and 10 lb. sizes.