Vermiculite Coarse Soil Additive
Best soil amendment for gardeners seeking improved moisture retention and root health.
Enhance your gardening with this coarse vermiculite soil additive from PVP INDUSTRIES. This naturally occurring mineral expands when heated, creating a lightweight, absorbent material that significantly improves soil structure. It's ideal for retaining moisture, promoting aeration, and supporting robust root development in various planting environments. This additive is perfect for customizing potting mixes and soilless blends to meet the specific needs of your plants, ensuring healthier growth and better yields. Sold in a 4 cubic foot bag, it's a versatile component for any gardener.
$45.80
Owner Satisfaction
4.7
/ 5
Category Rank
11
/ 1247
#11 in Soil
Price vs Category Average
-10%
Below average
Volume
4
/ cubic feet
Who it's for
- Seed starters seeking a sterile, reliable germination medium
- Gardeners struggling with heavy, compacted soil
- Busy plant owners needing to reduce watering frequency
Who should skip it
- Cactus and succulent enthusiasts prone to overwatering
- Long-term growers needing permanent soil structure
- Budget-conscious gardeners amending large outdoor beds
Performance breakdown
Moisture Retention
Superior water-holding capacity keeps roots hydrated through dry spells.
Soil Aeration
Coarse texture creates essential air pockets for healthier root respiration.
Blend Versatility
Easily integrates into any custom potting mix or soilless medium.
Sterility Standards
Heat-treated process ensures a weed-free and pathogen-safe growing environment.
Nutrient Neutrality
Inert composition allows for precise control over your own fertilization.
Handling Ease
Lightweight bulk makes mixing large batches physically manageable for gardeners.
Key Specs
Volume
4 cubic feet
Material
Vermiculite
Grade
Coarse
pH Level
7.0
Nitrogen
0.0%
Phosphorus
0.0%
Potassium
0.0%
Moisture Retention
High
Features
- Excellent moisture retention
- Improves soil aeration
- Ideal for custom soil blends
- Supports root development
- Lightweight and absorbent
- Sterilized for safe use
- Weed-free material
What customers say
The sentiment is strongly positive, centering on the product's superior quality and consistency. Consumers consistently highlight that this vermiculite is genuinely coarse, avoiding the fine dust often found in competing brands. This specific texture makes it exceptionally easy to incorporate into potting mixes, ensuring optimal aeration and water retention for healthier plant growth. It delivers reliable performance, meeting the precise needs of serious gardeners.
Know before you buy
Coarse-grade vermiculite provides larger air pockets within your soil mix, which is superior for improving aeration and drainage while still maintaining excellent moisture retention. It is particularly effective for plants that require a balance of water availability and root-zone oxygenation.
No, this product is inert and contains 0.0% nitrogen, phosphorus, and potassium. It serves strictly as a physical soil amendment to improve structure and water management rather than as a source of plant nutrition.
Yes, it is an excellent choice for both. Because the material is sterilized and weed-free, it provides a clean, consistent environment that reduces the risk of soil-borne pathogens or unwanted weeds in your seed trays and containers.
You can, but keep in mind that they serve different functions. While perlite is primarily used to increase drainage and aeration, vermiculite is better suited for mixes where you want to increase water and nutrient retention.
This vermiculite has a neutral pH of 7.0. It will not significantly alter the acidity or alkalinity of your existing soil blend, making it a safe, predictable addition to most potting recipes.
A 4 cubic foot bag is quite substantial and is designed for larger projects. It is enough to amend several large containers or a significant portion of a raised bed, depending on the ratio of vermiculite you choose to incorporate into your mix.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$46