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9 Best earthworm castings of 2026

Save up to 11% off
  • Best Choice

    1

    Wiggle Worm 100% Pure Worm Castings Plus Worm Egg Material, 40lbs – Fertilizer and Soil Amendment for Indoor and Outdoor Gardening to Improve Soil Fertility and Aeration - 100% Organic and Odor Free
    Clicked 57 times in the last month
    Wiggle Worm

    Wiggle Worm 100% Pure Worm Castings Plus Worm Egg Material, 40lbs – Fertilizer and Soil Amendment for Indoor and Outdoor Gardening to Improve Soil Fertility and Aeration - 100% Organic and Odor Free

    9.9
    Exceptional
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  • Value for Money

    2

    Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer, 30lbs - Improves Soil Fertility and Aeration for Growing Better Houseplants, Vegetables, and More
    Wiggle Worm

    Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer, 30lbs - Improves Soil Fertility and Aeration for Growing Better Houseplants, Vegetables, and More

    9.8
    Exceptional

  • 3

    True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields
    True Organic

    True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields

    9.7
    Exceptional

  • 4

    True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields
    True Organic

    True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields

    9.6
    Exceptional

  • 5

    Back to The Roots Organic Worm Castings for Plants, Natural Fertilizer and Soil Enhancer for Gardening, Made in The USA, 5lb
    Back to the Roots

    Back to The Roots Organic Worm Castings for Plants, Natural Fertilizer and Soil Enhancer for Gardening, Made in The USA, 5lb

    9.5
    Excellent
    Our Rating
  • See Today’s Deals & Prices

  • 6

    Back to The Roots Organic Worm Castings for Plants, Natural Fertilizer and Soil Enhancer for Gardening, Made in The USA, 5lb
    Back to the Roots

    Back to The Roots Organic Worm Castings for Plants, Natural Fertilizer and Soil Enhancer for Gardening, Made in The USA, 5lb

    9.4
    Excellent
    Our Rating

  • 7

    Brut Organic Worm Castings for Plants 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil and Garden Soil – Indoor and Outdoor Use
    BRUT WORM FARMS

    Brut Organic Worm Castings for Plants 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil and Garden Soil – Indoor and Outdoor Use

    • Ingredients:Certified organic ingredients
    • Item Form:Worm Castings
    • Application:Garden fertilizer
    • NPK Ratio:N/A
    • Coverage:N/A
    9.1
    Excellent
    Our Rating

  • 8

    Brut Organic Worm Castings for Plants 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil and Garden Soil – Indoor and Outdoor Use
    BRUT WORM FARMS

    Brut Organic Worm Castings for Plants 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil and Garden Soil – Indoor and Outdoor Use

    11% Off
    • Ingredients:Certified organic ingredients
    • Item Form:Worm Castings
    • Application:Garden fertilizer
    • NPK Ratio:N/A
    • Coverage:N/A
    8.8
    Very Good
    Our Rating

  • 9

    Worm Bliss (1 Qt) - Organic Worm Castings for Plants & Gardening - OMRI-Listed Earthworm Castings for Plants, Vegetables, Flowers, & Potting Soil - Organic Garden Fertilizer Rich in Nutrients
    plantonix

    Worm Bliss (1 Qt) - Organic Worm Castings for Plants & Gardening - OMRI-Listed Earthworm Castings for Plants, Vegetables, Flowers, & Potting Soil - Organic Garden Fertilizer Rich in Nutrients

    8.7
    Very Good