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What are Worm Castings?
Benefits of Worm Castings
How to use Worm Castings

Earthworms are nature’s plow, turning the soil and enriching it with castings as they go. Worm castings are a completely safe and 100% natural fertilizer for all plants, no matter how delicate, and simply cannot be used in excess. Castings improve soil and plant health with crucial, naturally present nutrients and increase plant and root growth significantly.


Mix casting into soil or top dress established plants repeat every two month for optimal growth and health of the plant.

In the Garden

When preparing garden beds use 4 lbs of casting per 10 sq ft and work into the soil. Apply 1 – 2 inches of castings to the bottom and sides of furrows add seeds or plants and cover well when plants are about 3 inches high side dress them liberally with castings. Repeat monthly using a handful of casting per plant.


Work 3 – 4 cups of castings into the soil around each bush or top dress using the same amount.


Using 1 cup castings, work into the soil being sure not to damage roots. Repeat through the growing season, about every 4 – 6 weeks.


Apply casting monthly using a handful of casting per plant, and work into the soil well.

Compost Piles

Spread a nice layer of casting between each layer of compost and water, and maintain proper moisture.

New Lawns

Work castings in the top 2 inches of soil using 1 lb per 10 sq ft of lawn. Mix in grass seed and water. If using sod, apply ⅛ inch to the bed and then apply sod and water well.

Established Lawns

Feed lawn by spreading 1 lb casting per 10 sq ft of lawn.

Berries, Trees and Shrubs

Mix about 4 cups of casting into the soil around the plants and water well. Repeat spring summer and fall when planting new plants spread casting around the surface of the hole. Make a mound in the center and spread out the roots over the mound. Mixing 1 part casting to three parts soil, fill in the hole and water well.

Planters and Pots

If creating new planters, mix castings 1 part to 3 parts soil. Top-dress these and established planters every two weeks using ¼ cup casting per planter.

Starting Seed Indoors

Mix 1 part castings to 3 parts soil and you will notice the difference in the size and growth of your seedlings.

Herb Gardens

Do not use casting full strength, to prevent scraggly plants with reduced aromatic oils. Instead, use 5 – 10% casting mixed with peat. Feed plants throughout the growing season using this same mixture.

Established Fruit and Nut Trees

Apply 2 cups of casting per every inch of the diameter of the tree as a top dress. From the trunk out to the drip line, cover with mulch and water well. Repeat as desired for a bountiful harvest.

Worm Casting Tea

You can make worm castings into a wholesome “tea” for your garden- and houseplants. There are two ways to do this:

Method One: Soak a few tablespoons of castings in a gallon of water overnight. The Worm Casting Tea can then be strained, diluted, and used to water house and garden plants, or it can be sprayed onto their leaves as a foliar fertilizer.

Method Two: Fill a bucket one fifth of the way with worm castings and the rest of the way with water. Add some molasses and kelp powder and stir and aerate the mixture by pouring it back and forth between two pails. Do this twice a day for 5 days and store in a warm place. Use the tea for watering your plants or spray it on their leaves. You can also run an air stone in the bucket for 24 hours to aerate the mixture with oxygen.

Wormies Earth Farm Worm castings are 100% natural food for your plants
Worm casting are 100% natural food for your plants, and will never damage or burn them — unlike chemical and other animal manures.
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