How to Use Worm Castings

If plants could talk, they’d beg for worm castings! These tiny, nutrient-packed powerhouses help your garden thrive—no synthetic fertilizers needed. Let’s break down how to give your plants the VIP treatment with nature’s best fertilizer.

Potted Plants & Seed Flats: The Perfect Potting Mix

  • Mix 1 part worm castings with 3 parts good garden soil—think of it as a gourmet blend for your seedlings.

  • Plant your seeds, water them, and watch the magic happen!

Vegetables & Annuals: Supercharge Your Crops

  • Line your planting holes and seed furrows generously with worm castings—it’s like tucking your plants into a cozy, nutrient-rich bed.

  • Set plants or seeds at the right depth, cover with soil, and water well.

  • Monthly boost: Sprinkle ½ cup per plant or 1 cup per foot of planting row and water like you mean it.

Perennials: Keep Them Thriving Year-Round

  • Work ½ cup or 1 inch of worm castings into the soil above the root zone in early spring, early summer, and early fall.

  • Water as needed, and prepare for some seriously happy plants!

Planters, Potted Plants, & Hanging Baskets: A Little Goes a Long Way

  • Work ½ cup or 1 inch of castings into the topsoil and give it a good soak.

  • Repeat every 2 months for lush, thriving plants that will make your neighbors jealous.

Shrubs, Berries, & Roses (Newly Planted): A VIP Welcome

  • Mix 1 part worm castings with 3 parts quality garden soil for transplanting.

  • Spread the roots over a mound of the mix, fill the hole, and water well.

  • Bonus Care: In the first growing season, work 1 inch of castings into the soil above the root zone in spring, summer, and fall.

Shrubs, Berries, & Roses (Established): Keep the Good Times Rolling

  • Work 4 cups of castings into the top 2–3 inches of soil in early spring and early fall.

  • Water well and watch your plants reward you with blooms and fruit.

Lawns: Turn Your Grass into a Green Carpet

🌱 New Lawns

  • Apply 10 pounds per 100 sq. ft. and lightly mix into the soil before seeding or laying sod.

  • Follow supplier instructions for seed or sod and water well.

🌱 Established Lawns

  • Top-dress with 10 pounds per 100 sq. ft., then water.

  • Your lawn will thank you by looking lush, green, and ready for barefoot summer strolls.

Compost Piles: Give Your Compost a Power-Up

  • Sprinkle a thin layer of worm castings between each new and existing compost layer.

  • Keep the pile properly moist and aerated—because happy compost = happy plants.

In General: The Plant Food That Never Fails

  • Worm castings are all-natural, chemical-free, and won’t burn your plants—unlike some overenthusiastic fertilizer choices.

  • Regular use boosts root development and supercharges plant growth—because your plants deserve the best!

Go ahead, give your garden the worm treatment—it’s the easiest way to grow happier, healthier plants with a little help from nature’s tiniest farmers. 🪱🌱💚