Skip to content
seedlings grow in worm castings and compost

10 Ways to Use Worm Castings

Wiggle Worm Earthworm Castings are safe at any concentration. Here are some guidelines to help you with planting a vegetable garden, perennials, roses, lawns, casting tea and more.


Line bottom and sides of plant holes and seed furrows with 1"-2" of earthworm castings. Set seeds or plants in place and cover with soil. Side dress during growing season at a rate of 1/2 cup per plant or 1 cup per linear foot of row once every 2 months.

seedlings growing in worm castings and compost


Work 1/2 cup earthworm castings into the soil above their root zone taking care not to damage shallow roots. Apply in spring, early summer and early fall.

Potted Plants and Seeds/Seed Flats-New

Potting mix-use 1 part earthworm castings to 3 parts soil.

Potted Plants, Window Boxes or Hanging Baskets- Established

Add 1-2 inches of earthworm castings to top of soil. Mix in taking care not to damage shallow roots - water - repeat every 2-3 months.

Roses, Trees, Shrubs and Berries - New or freshly transplanted

Mix 1 part earthworm castings to 3 parts soil. Surround newly dug hole with mixture. Spread roots over a mound of the mix in the hole and cover.

Roses - Established

Mix 4 cups of earthworm castings into soil 2-3 inches below the surface for each plant.

Lawns - New

Apply 10 lbs. per 100 sq. ft. Work lightly into the topsoil. Mix in grass seed and water well.

Lawns - Established

Distribute as top dress 10 lbs. per 100 sq. ft.

Casting Tea

Soak 1 part earthworm castings in 3 parts water for 12-24 hours. Stir well and water as usual. Casting tea is excellent for fruiting, flowering or difficult to access potted plants.

Compost Piles

Spread a thin layer of earthworm castings between each new layer of material to be composted.

Looking for more ways to grow healthy, vibrant plants? Add Blue Ribbon Organic Compost to your worm castings and soil. A popular mix is 1/3 peat moss, 1/3 horticultural grade vermiculite (coarse), 1/3 Blue Ribbon Organic Compost and Wiggle Worm Earthworm Castings.



Previous article Blue Ribbon Organic Compost for Vegetable Gardens
Next article How To Turn Your Pond Into An Ice Skating Rink


We Ship Quickly!