SimpliCastings Earthworm Castings
Best organic soil amendment for gardeners seeking safe, robust plant growth.
SimpliCastings offers the freshest earthworm castings, an excellent, eco-friendly plant food suitable for all your gardening needs. These castings are naturally pH neutral and packed with beneficial microbes designed to promote robust plant growth. A key advantage is that they will not cause plant burn, regardless of the amount applied. They are highly versatile, working effectively in both indoor and outdoor settings, including lawns and vegetable gardens. Available in 15 lb. and 30 lb. sizes, this product provides natural nourishment for superior results in all plant types.
$15.00
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-76%
Below average
Package Weight Options
15.30.
/ lb and lb
Who it's for
- Beginners worried about damaging delicate seedlings
- Gardeners focused on long-term soil vitality
- Organic growers prioritizing clean, chemical-free inputs
Who should skip it
- Busy gardeners preferring the ease of liquid fertilizers
- Budget-conscious gardeners managing large-scale plots
- Growers seeking immediate, high-impact nutrient spikes
Performance breakdown
Plant Safety
Zero risk of fertilizer burn makes application foolproof for novice gardeners.
Microbial Activity
High concentration of beneficial microbes actively revitalizes tired, depleted soil.
Versatility
Performs equally well in container gardens, lawns, and large vegetable patches.
Soil pH Balance
Neutral composition prevents unwanted acidity shifts in sensitive potting mixes.
Ease of Application
Granular form ensures clean, mess-free distribution across any planting area.
Eco-Friendliness
A purely organic, sustainable choice for environmentally conscious home growers.
Key Specs
Package Weight Options
15 lb. and 30 lb.
pH Level
Neutral
Fertilizer Type
Organic
Form
Castings (Granular)
Active Ingredient
Earthworm Castings
Environmental Label
Green eco friendly
Features
- Will not cause plant burn upon application
- pH neutral composition
- Rich with beneficial microbes for soil health
- Green, eco-friendly plant food
- Suitable for all plant types
- Highly versatile for indoor/outdoor use
What customers say
Customers consistently praise the exceptional quality and noticeable effectiveness of SimpliCastings Earthworm Castings. Reviewers highlight the product's purity, noting its fine texture and lack of fillers. This purity directly translates into superior plant growth and vitality. The consensus is that this amendment delivers powerful results quickly. It is a highly trusted component for both indoor and outdoor gardening enthusiasts seeking robust, healthy plants.
Know before you buy
Yes. Because these castings are naturally pH neutral and gentle, they will not burn your plants, even if you apply them liberally.
The microbes improve soil structure and help break down organic matter, making nutrients more accessible to your plant's root system for healthier, more robust growth.
Absolutely. SimpliCastings are highly versatile and work effectively as a natural soil amendment for everything from vegetable patches and flower beds to established lawns.
No, you don't need to adjust for pH. Since SimpliCastings are naturally pH neutral, they integrate safely into any soil environment without disrupting the existing balance.
You can mix them directly into your potting soil for indoor plants or top-dress the surface of your garden beds and lawn. Because they are organic and non-burning, there is no strict application limit.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$15