Beneficial soil microbes require aerobic conditions to thrive, howevery they also need constant moisture. If soil is allowed to dry out too much, much of the microbial population will begin to go dormant and even die off. Our favourite fabric pots are Grassroots Living Soil Fabric Pot due to a balance of both waterproof section to encourage even moisture retention and breathable lower fabric strip for root pruning and breathability. Fabric pots promote an aerobic environment through a breathable fabric. When roots hit the edge of the pot they grow new shoots instead of circling around the pot and becoming root bound.