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

OMRI Listed Vermiculite for Hydroponics, Super Coarse

Hydroponic systems and high-porosity soil mixes need a vermiculite grade coarse enough to keep air moving through the media, while still holding the nutrients vermiculite is valued for. PVP Industries Super Coarse Horticultural Vermiculite is graded for that combination, preferred for hydroponics and high-porosity soil 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 Super Coarse Horticultural Vermiculite

Hydroponic growers and those building high-porosity soil mixes who want an OMRI Listed vermiculite that holds nutrients and moisture without breaking down will find this super 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 super coarse grade vermiculite preferred for?

Hydroponics and high-porosity soil mixes, where a larger particle size keeps air moving through the media. That coarser grade resists compaction better than the finer grades in this line.

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.