Worm Castings in autoflower

Hello everyone I will be using worm castings in this grow…how will I apply it in to soil and top dress??5gallon fabric pots??

What you’re adding when using compost or casting is the bacteria and microbes. As a fertilizer they are rated like .5-.5-.5. You could add a cup a week and do alright. I top dress once a month at 1 cup. But I’m not feeding my plant, I’m feeding my soil so it’s strictly to replenish the bacteria and microbe population.