Obviously, the bigger a plant's root mass the better it can absorb nutrients and water. But how do you encourage extra root growth?
There are a number of products on the market that are formulated to increase the size of a plant's root mass. Some of the best can provide a root increase up to 700%. Here are some things to look for when buying these products:
Search for products containing super strains of Plant Growth Promoting Rhizobacteria (PGPR). When this product is combined with bacterial and fungi inoculates, it can provide almost magical root and plant development.
The inoculates you want to add to your media are trichoderma, endomycorrhizal and ectomycorrhizal fungi. You may have to buy two different products to get a full range of inoculates. For example, some products contain 8 species of trichoderma and others have 18 species of endomycorrhizal.
These are living organisms so be certain to buy quality products that are relatively fresh. When applied to your media, they will colonize both inside and outside your plant roots, making them stronger and healthier. (voodoo juice, piranha, tarantula)