PVP Industries Coarse Horticultural Vermiculite | 4cu ft - Coarse (33/PL) - OMRI Listed

OMRI Listed Vermiculite for Potting Mixes, Coarse

General soil amendment blends and potting mixes benefit from a vermiculite grade in between fine seeding-grade and the coarsest hydroponic grade, giving broad-purpose moisture and nutrient retention. PVP Industries Coarse Horticultural Vermiculite fills that middle ground, suited to general soil amendment blends and potting mixes.

This 4cu ft bag is OMRI Listed and ships 33 bags per pallet for growers ordering in bulk.

Key Features & Benefits

• OMRI Listed — certified for organic production use.
• Permanent and pH Neutral — won't deteriorate, mold, or rot over time.
• Holds Key Nutrients — attracts and retains ammonium, potassium, calcium, and magnesium for plant uptake.
• Promotes Faster Root Growth — helps anchor young roots quickly after transplant or seeding.
• 33 Bags Per Pallet — packaged for efficient bulk handling and shipping.

Who Should Use PVP Industries Coarse Horticultural Vermiculite

Growers blending general soil amendments and potting mixes who want an OMRI Listed vermiculite that holds nutrients and moisture without breaking down will find this coarse grade suited to that use.

About PVP Industries

PVP Industries has manufactured mineral-based growing media since 1984 from a 20-acre facility in North Bloomfield, Ohio, processing and grading horticultural vermiculite (including its Mica-Grow line) alongside its perlite lines for soil mixes, hydroponics, and container gardening.

Frequently Asked Questions

Is this vermiculite OMRI Listed?

Yes, this vermiculite carries OMRI Listing, meeting the standards organic certification programs require. Growers maintaining organic certification on their operation can use it with confidence.

What is coarse grade vermiculite preferred for?

General soil amendment blends and potting mixes, where a mid-size particle grade suits broad-purpose use. That middle grade works well when blended alongside both peat and composted pine bark.

What nutrients does it hold?

It attracts and holds ammonium, potassium, calcium, and magnesium, making those nutrients more available to plant roots over time. Mixed with soil, peat, or composted pine bark, it also improves overall aeration and moisture retention.

Will it break down over time?

No, vermiculite is permanent and pH neutral, so it will not deteriorate, turn moldy, or rot. That stability holds even when it's blended with fertilizers, pesticides, or herbicides in a working soil mix.

How is this packaged?

This 4cu ft bag ships 33 per pallet, sized for growers ordering in bulk quantities. Individual bags can also be purchased apart from a full pallet order.