Hydrofarm
Wiggle Worm Soil Builder
Best organic soil conditioner for vibrant indoor and outdoor plant growth.
Nourish your plants with Wiggle Worm Soil Builder, an organic fertilizer designed for vibrant vegetables, flowers, and houseplants. This sterile, odorless formula provides a dual-release nutrient system, feeding your plants immediately and over time for sustained growth. Its highly concentrated nature means a little goes a long way, delivering remarkable results in gardens and containers. Experience the benefits of this effective soil conditioner, perfect for enhancing plant health and vitality. Please note, this product is exclusively available for local in-store pickup.
$14.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4348
#50 in Fertilizers
Price vs Category Average
-76%
Below average
Fertilizer Source
Organic
/ Organic
Who it's for
- Gardeners protecting fragile seedlings and young starts
- Organic growers focused on long-term soil health
- Busy plant owners preferring low-maintenance feeding schedules
Who should skip it
- Budget-conscious gardeners managing large-scale projects
- Commercial farmers needing cost-effective bulk soil amendments
- Growers seeking immediate, high-potency nutrient spikes
Performance breakdown
Nutrient Delivery
Dual-release system ensures consistent plant vitality from start to finish.
Application Versatility
Works seamlessly across indoor containers and outdoor garden beds alike.
Formula Concentration
High potency means a single bag covers significant planting area.
Soil Conditioning
Organic composition actively improves soil structure for better root health.
User Experience
Sterile and odorless profile makes indoor application clean and pleasant.
Accessibility
Local pickup requirement limits convenience for those without nearby retailers.
Key Specs
Fertilizer Source
Organic
Organic Certified
true
Target Plant Type
Vegetables, Flowers, Houseplants
Fertilizer Form
Granular
Release Type
Quick Release, Slow Release
Container Weight
30 Pounds
Water Soluble
false
Features
- Sterile and odorless organic fertilizer
- Immediate and slow-release nutrition
- Highly concentrated formula
- Boosts vegetable and flower growth
- Ideal for houseplants
- Improves soil health
- Easy to apply
- Organic certified
What customers say
The overwhelming sentiment surrounding Wiggle Worm Soil Builder centers on its exceptional quality and proven effectiveness. Gardeners consistently report dramatic improvements in plant vitality, root development, and overall yield, often noting that a little goes a long way. This concentrated potency establishes the product as a premium soil amendment. While the initial price point is higher than standard alternatives, consumers view the tangible, superior results as justifying the investment, solidifying its strong value proposition for dedicated growers seeking reliable, high performance organic inputs.
Know before you buy
Yes, it is perfectly safe for houseplants. Because the formula is sterile and odorless, it is an excellent choice for indoor environments where you want to avoid pests or unpleasant smells.
The formula provides immediate nutrients for a quick boost to your plants, while the slow-release component breaks down over time to provide sustained nourishment. This ensures your plants receive consistent feeding without the need for frequent reapplication.
Absolutely. It is an organic-certified fertilizer, making it a great choice for edible crops. It helps improve overall soil health, which leads to more vibrant and productive vegetable growth.
No, this product is not water-soluble. It is designed to be applied directly to the soil as a granular amendment, where it will naturally integrate into the growing medium.
Because the formula is highly concentrated, a little goes a long way. You should follow the application rates on the packaging based on the size of your garden or container to avoid over-fertilizing.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$15