Uni-Gro Perlite | 12qt - Bag

Lightweight Porous Perlite for Container Soil Aeration, 12qt

A container soil mix that holds too much water around the roots invites rot, but one that drains too fast can't hold enough moisture between waterings either. Uni-Gro Perlite balances that with lightweight, porous granules that open up a container mix for better drainage and aeration while still helping it retain the moisture roots need.

This 12qt bag is sized for blending into container soil mixes at retail scale, and the same porous structure that helps mature container plants also aids seed germination and the rooting of plant cuttings.

Key Features & Benefits

• Lightweight porous granules — a naturally occurring soil amendment that doesn't add unnecessary weight to containers.
• Enhances moisture retention and aeration — improves how a container soil mix performs together rather than trading one for the other.
• Aids seed germination — supports the moisture and airflow conditions germinating seeds need.
• Suited to plant cutting propagation — the same porous structure supports developing roots on cuttings.

Who Should Use Uni-Gro Perlite

This fits gardeners blending container soil mixes, or starting seeds and cuttings, who want a lightweight aeration and moisture amendment rather than a heavier mineral additive.

About Unigro

Unigro packages this Perlite alongside its peat moss and vermiculite lines, rounding out a set of retail soil additives built for container gardening and propagation work.

Frequently Asked Questions

What is perlite made of?

It's a lightweight blend of naturally occurring porous granules, expanded to create the air pockets that give it its aeration and moisture-balancing properties. It's mineral in origin rather than an organic material like peat moss.

How is perlite different from vermiculite?

Perlite is lighter and drains faster, favoring aeration over water retention, while vermiculite's accordion-shaped particles hold more water alongside air. Many container mixes use both together to balance drainage against moisture retention.

Can perlite be used for starting seeds?

Yes, it aids seed germination by supporting the moisture and airflow conditions germinating seeds need. It's also suited to rooting plant cuttings for the same reason.

How much perlite should I add to a container soil mix?

The right amount depends on the base mix and what it's missing — more perlite for a mix that drains too slowly, less for one that already drains well. This bag doesn't specify a fixed ratio, so adjust based on how the existing mix performs.

Does perlite break down over time like organic amendments?

No, perlite is a mineral material that holds its structure rather than decomposing the way peat moss or compost does. That's part of why it continues providing aeration in a container mix over multiple growing seasons.