Item Number: PSO352
Vermiculite (3.5 Cu Ft Bag)
Improves Water Retention and Nutrient Exchange
Vermiculite is a naturally-occurring mineral commonly used in potting mixes and seed-starting blends. Our organic vermiculite is derived from mica rock, which is puffed under pressure and heat, creating a lightweight and absorbent material.
A vermiculite bag or bag of vermiculite offers an excellent soil amendment, improving aeration, drainage, and moisture retention. This makes vermiculite organic the ideal growing medium for plants, ensuring they have the best conditions for healthy growth.
Whether you're creating potting mixes or enhancing your garden soil, vermiculite for plants provides valuable benefits.
Organic Vermiculite: A Versatile Soil Amendment
Organic Vermiculite is a valuable soil amendment that has gained popularity among gardeners and horticulturists for its unique properties and numerous applications in agriculture. Derived from naturally occurring mineral deposits, vermiculite is known for its ability to improve soil structure, water retention, and aeration.
What is Organic Vermiculite?
Vermiculite is a naturally occurring mineral that expands when heated. The result is a lightweight, highly absorbent material with a spongy texture. Organic vermiculite, like the one available in a 3.5 cu. ft. bag, is processed without the use of chemicals, making it suitable for organic gardening practices.
Enhanced Water Retention
One of the primary advantages of using organic vermiculite in your garden or greenhouse is its exceptional water retention capabilities. Vermiculite can hold moisture within its structure, slowly releasing it to plant roots as needed. This property makes it an ideal choice for moisture-loving plants and helps maintain consistent soil moisture levels. Compared to traditional soil amendments, vermiculite's ability to prevent overwatering and underwatering can result in healthier, more resilient plants.
Improved Soil Aeration
In addition to its water retention properties, organic vermiculite also enhances soil aeration. When mixed into soil, vermiculite creates air pockets that allow for better root penetration and oxygen uptake by plant roots. This improved soil structure promotes healthier root development and helps prevent soil compaction, a common issue in heavy clay soils. Vermiculite's lightweight nature ensures that it doesn't add unnecessary bulk to your soil mixture, which can be a concern with some other amendments.
Nutrient Retention and Release
Organic vermiculite is an excellent medium for nutrient retention and gradual release. It can absorb and hold onto essential nutrients like potassium, magnesium, and calcium. As plants require these nutrients, vermiculite gradually releases them into the soil, ensuring a steady supply for optimal plant growth. This nutrient buffering capacity sets vermiculite apart from other soil amendments that may not offer such consistent nutrient availability.
Seed Starting and Propagation
For gardeners looking to start seeds or propagate plants, organic vermiculite is a valuable tool. Its fine, lightweight texture provides an ideal environment for seedlings and cuttings. Vermiculite's moisture-retentive properties create a stable and nurturing environment for young plants, giving them the best chance of successful germination and growth.
Comparing to Other Popular Soil Amendments
While organic vermiculite offers numerous benefits, it's essential to consider how it compares to other popular soil amendments like perlite and peat moss.
Perlite: Perlite is another lightweight soil amendment, but it primarily enhances soil aeration. Vermiculite, on the other hand, excels in both water retention and aeration, making it a more versatile choice for a wider range of plants and soil types.
Peat Moss: Peat moss is valued for its water retention and acidity-altering capabilities. However, it may have sustainability concerns due to its slow regeneration rate and potential environmental impact. Organic vermiculite provides similar water retention benefits without the environmental concerns associated with peat moss.
Why Choose Organic Vermiculite for Your Garden?
Versatility in Use: Organic vermiculite is highly versatile, making it an excellent addition to various soil types.
Ideal for Different Soil Types: Organic vermiculite helps improve soil structure in heavy soils by reducing compaction and creating better access for root growth. Its non-combustible, natural properties also make it perfect for starting cuttings. Vermiculite can be stored for long-term use and ensures optimal moisture and nutrient retention. Note: It works well when combined with other soil amendments to enhance soil performance.
How to Use Organic Vermiculite in Your Garden
Mixing with Soil for Improved Drainage and Moisture: Organic vermiculite is an ideal amendment for improving soil drainage and moisture retention. When mixed with heavy soils, it reduces compaction and creates better access for root growth. Its non-combustible, natural properties help retain moisture while ensuring adequate aeration for healthy plant development. Note: Vermiculite can be stored for future use and works effectively with other soil amendments.
For Seed Starting and Propagation: Organic vermiculite provides an excellent medium for seed starting and propagating cuttings. Its moisture-retentive properties create a stable environment for seeds and cuttings to thrive, promoting successful germination and growth. Its lightweight and natural composition ensures optimal conditions for root development. Note: Vermiculite's ability to improve aeration and moisture balance makes it a preferred choice for propagation.
In Container Gardening: In container gardening, organic vermiculite enhances drainage and prevents soil compaction, ensuring plants have access to the necessary nutrients and water. Its non-combustible, natural texture helps create an ideal growing environment for container plants, allowing for better root growth and healthier plants. Note: It can be stored and used in various container gardening setups for long-term benefits.
Organic vermiculite is a versatile and valuable addition to any gardener's toolkit. Its ability to enhance water retention, soil aeration, and nutrient availability makes it a preferred choice for various gardening applications. When compared to other popular soil amendments, vermiculite's balanced properties make it a standout option for both novice and experienced gardeners looking to improve their soil quality and promote healthier plant growth. Whether you're starting seeds, propagating plants, or simply seeking to improve your garden's soil structure, organic vermiculite is a reliable and sustainable choice.
Why Buy Organic Vermiculite From Us?
Our organic vermiculite is the ideal soil amendment for improving soil structure, whether you're tackling heavy soils or enhancing water retention. The vermiculite bag we offer is non-combustible, natural, and perfect for preventing compaction while providing essential moisture and nutrient access for plants. It is ideal for seed starting, propagating cuttings, and can be easily stored for future use—note the date of purchase for freshness and optimal results.
See our companion guide for vermiculite as a soil amendment in the resource center. We also have a large selection of other soil amendments for sale.

Check Your Zone Compatibility:
Compatible with your zone.
Growing Zone for

Our Guarantee To You
Since 1976, we've served our customers at every stage of growing. Please contact us at any time. We are happy to support and assist you.
Shipping Information
Shipping Information
Shipping Weight: 33.49 lb
Dimensions: 27.5"L x 15.5"W x 13.5"H
Features
Features
- Improves Nutrient Uptake
- Improves Water Holding Capacity
- Use for Propagation
- Use for Seed Starting
Characteristics
Characteristics
Use Instructions
Use Instructions
Useful Information
Useful Information
Guarantee
Guarantee
Share


I use this product for Wildflower seed broadcasting and my African violets. Wonderful value for a great product!
This is a great product for using to plant my tiny wildflower seeds. I am also using it to mix in my potting soil to really help with water retention.
We have ordered medium vermiculite many times but we just discovered today that you sent us the coarse grade. This is disappointing because we could get coarse grade in town. We pay the 14.00 plus in freight to get medium and have never had a problem until now. We did not notice when the box came but using today for planting did not get the results we do from medium.
Related Pages
- All product 20% off collection |
- All Products |
- Cyber Monday Sale - 20% Off + Free Seeds with Every $20 spent! |
- Farmer Favorites |
- Farmer Favorites - Growing & Propagating Supplies |
- Growing Medium Ingredients |
- Growing Mediums |
- Growing Supplies |
- Improves Nutrient Uptake |
- Improves Water Holding Capacity