Our Mycorrhizal Fungi is an organic fungi that helps establish root growth on newly planted trees and shrubs. Mycorrhizal Fungi is easy to use when planting both plants and trees. One treatment of Rootgrow Professional lasts forever and transplanting success rates will increase. The plants will immediately develop better root systems, taking up more nutrients and an increase in drought tolerance. Different amounts are needed depending on the size of the plants or where they are being planted. It is advisable to allow 5g per bare root plant up to 120cm and for container plants allow 2g per litre of pot or root ball. Allow 50g for 175-200cm trees and 150g for large trees. For any further queries concerning Mycorrhizal Fungi please check with our team regarding stock or maintenance.