The ingredients in worm chow directly affect the microbial balance in your worm castings. Recipes high in grains, simple carbs, and proteins (like cornmeal or alfalfa meal) promote bacterial growth, great for fast-growing veggies. On the other hand, adding woody materials, shredded leaves, or coffee grounds encourages fungal growth, ideal for shrubs and perennials. A balanced mix of both creates versatile castings for various plants. Adjust the recipe to match your gardening goals! Hope this helps clear up things a bit for you.