Worm Gold Worm Castings
Best organic soil amendment for health-conscious indoor and outdoor gardeners.
Elevate your gardening with Worm Gold Worm Castings, a pure, organic fertilizer crafted entirely from earthworm castings. This non-toxic, odor-free amendment enriches soil naturally, promoting robust plant growth. It features 92% pure worm castings and 3% fossilized kelp for essential calcium. Ideal for houseplants, vegetables, flowers, trees, and shrubs, this 20 qt bag provides concentrated, natural goodness for a thriving garden. Experience the difference of premium, all-natural soil enrichment.
$29.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4449
#50 in Fertilizers
Price vs Category Average
-51%
Below average
Contents
92
/ % WORMGOLD® Pure Worm Castings
Who it's for
- Gardeners protecting delicate seedlings from chemical fertilizer burn
- Organic growers aiming to improve long-term soil health
- Eco-conscious gardeners seeking natural pest and disease resistance
Who should skip it
- Budget-focused gardeners managing large-scale planting areas
- Growers needing high-impact nutrients for severely depleted soil
- Gardeners with limited storage space or physical lifting restrictions
Performance breakdown
Nutrient Density
High concentration of castings provides a potent boost for tired soil.
Application Versatility
Equally effective for delicate houseplants and robust outdoor vegetable patches.
Odor Profile
Completely scentless, making it perfect for indoor gardening enthusiasts.
Soil Enrichment
Fossilized kelp addition significantly improves calcium levels for healthier plant structures.
Ease of Handling
Granular form allows for clean, mess-free distribution around root zones.
Organic Integrity
Pure, chemical-free composition ensures safety for organic growing standards.
Key Specs
Contents
92% WORMGOLD® Pure Worm Castings
Supplement
3% Fossilized Kelp (for Calcium)
Package Size
20 qt
Certification Status
All Organic
Toxicity
Non-Toxic, No Chemicals
Fertilizer Source
Organic, Natural
Target Plant Type
Vegetables, Flowers, Trees and Shrubs, Houseplants
Fertilizer Form
Granular
Features
- Purely organic soil enrichment
- Completely non-toxic and odor-free
- Boosts calcium with fossilized kelp
- Versatile for indoor and outdoor plants
- High concentration of beneficial castings
- Supports houseplants and vegetables
- Enhances flowers, trees, and shrubs
What customers say
Customers consistently praise Worm Gold Worm Castings for their exceptional quality and noticeable impact on plant health. The primary sentiment revolves around the product's high potency, often resulting in vigorous growth and improved yields across various gardening projects. While some users note the premium price point, the overwhelming consensus is that the superior efficacy justifies the investment, making it a highly valued amendment for serious gardeners seeking reliable, top tier results.
Know before you buy
Yes, it is perfectly safe for indoor use. Because it is odor-free and non-toxic, you can safely amend the soil of your houseplants without worrying about unpleasant smells or chemical residues.
No, Worm Gold is a granular product. It is designed to be mixed directly into your soil or potting medium to provide slow-release nutrients rather than being dissolved in a watering can.
The 3% fossilized kelp is added specifically to boost the calcium content of the castings. This helps support stronger cell walls in your plants, which is particularly beneficial for vegetable crops and flowering shrubs.
Application rates vary depending on the plant type and whether you are potting new plants or top-dressing existing ones. Generally, you can mix it into your potting soil at a ratio of 10% to 20% or sprinkle a light layer around the base of established plants.
Yes, Worm Gold is completely organic and non-toxic. It contains no synthetic chemicals, making it a safe choice for gardens where pets or children play.
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$30