PVP Industries Medium Horticultural Vermiculite | 4cu ft - Medium - OMRI Listed

OMRI Listed Vermiculite for Seeding and Plugs, Medium

Seeding trays and small plug cells need a growing-media additive that holds moisture and nutrients close to a young, limited root system, rather than draining too fast for a seedling to establish. PVP Industries Medium Horticultural Vermiculite is graded for exactly that scale, preferred for seeding, plugs, small cells, and moisture-retentive soil mixes.

This 4cu ft bag is OMRI Listed, and mixed with soil, peat, or composted pine bark it holds nutrients and moisture without breaking down.

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.

Who Should Use PVP Industries Medium Horticultural Vermiculite

Growers seeding, transplanting plugs, or building moisture-retentive soil mixes who want an OMRI Listed vermiculite that holds nutrients without breaking down will find this medium 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 medium grade vermiculite preferred for?

Seeding, plugs, small cells, and moisture-retentive soil mixes, where a finer particle size suits a smaller root volume. That fine grade helps keep young roots consistently moist between waterings.

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 listing is a standard 4cu ft bag, sized for regular potting-mix and seed-starting use. It is not part of the bulk-pallet packaging used for the coarser grades.