Canna Canna Coco Brick 40l Expandable Natural Plant Medium Soil Substrate, 40

The CANNA Coco Brick 40L is an expandable natural plant medium designed for gardeners who need reliable growing substrate without storing bulky bags of soil. It arrives as a compressed block that expands into loose, workable material, making it suitable for potting and planting needs.

The standout feature is its expansion ratio. In its dry state, the brick measures just 8 liters, allowing you to store it in small utility areas or tight sheds. Once expanded, it yields 40 liters of natural medium, giving you a substantial volume of substrate for your containers.

Because it is an organic plant medium, it serves as a straightforward, natural substrate for your plants. However, the listing does not specify detailed hydration instructions or whether any initial washing or buffering is necessary, so users must manage the expansion process based on general coco coir handling.

Verdict: The CANNA Coco Brick is a practical option for growers who want a natural, organic substrate with the convenience of compact storage. It delivers 40 liters of usable plant medium from a manageable 8-liter compressed block.

A great fit if you:

• Want an organic, natural medium for potting and growing plants
• Have limited storage space and prefer a compact dry brick over large soil bags
• Need up to 40 liters of substrate for your gardening projects

Consider something else if you:

• Prefer ready-to-use potting soil that requires no expansion steps
• Need a pre-mixed substrate with listed added fertilizers

How much growing medium does this brick yield?
The brick expands from an 8-liter dry volume into 40 liters of usable plant medium.

Is this substrate natural and organic?
Yes, the product is listed as a natural and organic plant medium.

What is the size of the brick before expansion?
The brick has a dry volume of 8 liters before it is expanded.