Vermiculite Coarse Grade - 4 Cu Ft Bag

Looser Soil and Steadier Moisture for Root Zones - 4 Cu Ft

Compacted soil makes it harder for roots to spread and breathe. This coarse grade horticultural organic vermiculite keeps soil from clumping, holds moisture and nutrients for later use, and leaves room for air around the roots. It is also sterile, so you start with a clean medium.

The 4 cu ft bag suits growers who blend media regularly, from home gardeners mixing several containers to small commercial operations filling beds or hydroponic systems. It is sold each, with an order minimum that is separate from the bag itself.

Key Features & Benefits

• Coarse grade — a larger particle for blends that need airflow and drainage.
• Moisture and nutrient retention — holds water and nutrients for the plant to use later.
• Clean and sterile — odorless, non-toxic, and completely sterile when you open the bag.
• OMRI listed and CDFA — documentation that matters for organic programs.
• 4 cu ft volume — enough to mix in bulk without handling many small bags.

Who Should Use Vermiculite Coarse Grade 4 Cu Ft

Use it if you mix your own soil, grow in small garden areas, or run hydroponic systems that need a moisture-holding medium. It also suits growers who follow organic standards and need a listed amendment.

About Vermiculite Coarse Grade 4 Cu Ft

This is horticultural organic vermiculite in coarse grade, supplied in a 4 cu ft bag. The brand is not identified. It is listed as OMRI listed and CDFA, and it is described as clean, odorless, non-toxic, and completely sterile. This product does not ship ground and is available only from the Michigan Distribution Center.

Frequently Asked Questions

Q: What does vermiculite do in a growing mix?
A: It keeps soil from clumping, which makes it easier for roots to develop. It also holds moisture and nutrients for later use and helps supply oxygen to the root zone.

Q: Is it sterile?
A: Yes, it is described as completely sterile. That means you are not introducing bacterial or fungal problems with the medium itself.

Q: Can I use it in hydroponics?
A: Yes. A 50/50 mix of vermiculite and perlite is a popular medium for drip and ebb-and-flow hydroponic systems.

Q: How do I blend it for small-area gardening?
A: One suggested blend is equal parts vermiculite, compost, and peat moss. You can also mix it with natural soil, peat, compost, or bark to hold moisture and retain air.

Q: What does coarse grade mean?
A: Grade refers to particle size. Coarse is the larger size, which suits mixes that need more air space.

Q: Can it ship by ground?
A: No. It does not ship ground and is only available from the Michigan Distribution Center.