Vermiculite Grade C-3 is a medium particle size material meeting ASTM C516 Type 1 , Grade 3 specifications. The material is widely used as a component in growing media for professional growers.
| Unit Weight | 6.5 – 7.5 lb/cf |
| pH in Water | 6-9 |
| Moisture loss @ 230°F | 7-12% |
| Sintering Temp. | 2100-2280° |
| Packaging: | |
| 28-30 lb. kraft bags | 30 Bags/Pallet |
| Bag Volume | Approx. 4 cf |
Applications And Industries Served
Vermiculite Grade C-3 is used throughout the horticultural and agricultural sectors for growing media production and plant propagation.
Common applications include:
- Greenhouse growing operations
- Commercial nurseries
- Professional horticulture
- Seed starting mixes
- Container growing systems
- Soil amendment programs
- Propagation media
- Hydroponic growing applications
- Landscaping operations
- Agricultural production facilities
Its versatility allows it to be incorporated into both small-scale and high-volume growing media production.
Benefits For Growing Media Formulations
When incorporated into professional growing media, vermiculite can help improve physical media characteristics and create a more balanced growing environment. Its lightweight composition contributes to easier handling while supporting moisture distribution throughout the root zone.
Benefits often associated with vermiculite-based growing media include:
- Enhanced water retention
- Improved nutrient holding capacity
- Reduced media compaction
- Consistent particle structure
- Better root zone aeration
- Uniform blending with other media components
Frequently Asked Questions
What Is Vermiculite Grade C-3?
Vermiculite Grade C-3 is a medium-sized expanded vermiculite product that meets ASTM C516 Type 1, Grade 3 specifications and is commonly used in professional growing media.
What Is Vermiculite Used for in Horticulture?
Vermiculite is often incorporated into growing media, propagation mixes, and soil amendments to help manage moisture retention and support root zone development.
Can Vermiculite Be Mixed with Other Growing Media Components?
Yes. Vermiculite is frequently blended with peat moss, bark products, compost, and other growing media ingredients to achieve specific performance characteristics.
What Industries Commonly Use Vermiculite Grade C-3?
Commercial greenhouses, nurseries, horticultural operations, agricultural producers, and soil blending facilities commonly utilize Vermiculite Grade C-3.
