Urban Worm Castings - OrganicOur worm castings are approved for organic use! Add life back to your soil with Urban Worm Castings! These castings have a balanced fungal: bacterial ratio and if you can keep them out of UV light, their quality will persist for 6 months or more. Recent analysis shows high humic content and nitrogen cycling microbes. Urban Worm Castings are shown to: boost plant growth speed up germination increase yield by 20 80% suppress pests and pathogens improve