Ferry-Morse® Professional Vermiculite — 8qt — Granules

Expanded Vermiculite for Aeration and Moisture Retention, 8qt

A growing mix that's either too dense or too quick-draining makes it harder to keep moisture and nutrients available to developing roots, which shows up most in seed starting and propagation where consistency matters. Ferry-Morse Professional Vermiculite is an expanded mineral granule that improves aeration while holding water and nutrients in the root zone, whether used alone or blended into a larger mix.

This 8qt bag is sterile and pH neutral, sized for seed starting, propagation, and container growing rather than large-scale bulk amendment.

Key Features & Benefits

• Expanded vermiculite granules — improves aeration while holding water and nutrients in the root zone.
• Lightweight, sterile, and pH neutral — won't introduce pathogens or shift the pH of a growing mix.
• Usable standalone or as a blend component — works as a complete growing medium or mixed into soil or soilless blends.
• Suited to seed starting, propagation, and container growing — sized for smaller-scale, precision applications.

Who Should Use This

This fits home gardeners and small-scale growers starting seeds, propagating cuttings, or filling containers who want a lightweight, sterile amendment that improves aeration and moisture retention without altering the mix's pH.

About Ferry-Morse

Ferry-Morse, founded in 1856, is one of the heritage gardening brands under Green Garden Products, known for pioneering the sale of seeds to home gardeners in individual packets. Its Professional Vermiculite line extends that home-gardening focus into growing media for seed starting and container work.

Frequently Asked Questions

Can vermiculite be used on its own or does it need to be mixed with soil

It can be used either way, as a standalone growing medium for seed starting and propagation, or blended into a soil or soilless mix as an amendment. Straight vermiculite is common for starting seeds, while blending it in improves aeration and moisture retention in a larger mix.

Will vermiculite change the pH of my growing mix

No, it's pH neutral, so it won't shift the pH of whatever soil or soilless mix you blend it into. That neutrality is part of why it's a common seed-starting and propagation amendment.

Is vermiculite sterile

Yes, it's processed to be sterile, which reduces the risk of introducing pathogens into a seed-starting or propagation setup compared to unprocessed garden soil. That's especially useful when starting seeds indoors in enclosed trays.

How is vermiculite used in container growing

In container growing, it improves aeration and helps hold water and nutrients in the root zone, which is useful in mixes that otherwise drain too quickly. It's lightweight enough that it doesn't add meaningful weight to a container mix, either.