Grodan Improved Gro-Block | 6in - Hugo - 6in x 6in x 6in - Pre-Cut Holes

Large-Volume Stonewool Cube for Late Vegetative Growth, 6in Hugo

A vegetative plant that's outgrown a 4in block still needs a stonewool volume large enough to support it through to flowering without another transplant. Grodan Improved Gro-Block in the Hugo 6in x 6in x 6in format gives that plant a large-volume cube built on Grodan's engineered fiber structure, with a pre-cut hole ready to accept a smaller rooted block.

This Hugo cube ships in a loose carton, a format suited to growers ordering a moderate quantity for a single bench run.

Key Features & Benefits

• Hugo 6in x 6in x 6in Cube — a large-volume block sized to carry a plant from vegetative growth toward flowering.
• Pre-Cut Hole — sized to receive a smaller rooted Gro-Block for a seamless step up in root volume.
• Hydrophilic Fiber Structure — distributes water and air through the full cube volume for even root development.
• Loose Carton or Bulk Pallet Packaging — available in either format depending on order size and handling preference.

Who Should Use This 6in Hugo Block

Growers moving a plant from late vegetative growth into flowering, who need a single larger block rather than another transplant, are the fit for the Hugo cube.

About Grodan

Grodan has engineered stonewool growing media since introducing the technique in 1969, and as part of ROCKWOOL Group today extends that fiber engineering into large-format blocks like the Hugo cube.

Frequently Asked Questions

What does the Hugo block size mean?

Hugo is Grodan's name for its 6in x 6in x 6in cube, a large-volume block sized for plants moving well beyond the propagation stage. It's one of the larger single-block formats in the Gro-Block line.

When should I transplant into a Hugo block?

Move a plant into a Hugo cube once it has filled a smaller block and needs more root volume to keep growing toward flowering. Pre-soak the Hugo block with pH-adjusted water before setting the smaller rooted block into its pre-cut hole.

What's the difference between the carton and bulk pallet Hugo blocks?

Both use the identical 6in x 6in x 6in cube with a pre-cut hole. The only difference is packaging, with one shipping in a loose carton and the other on a bulk pallet for larger orders.

Can a Hugo block go directly under a flowering canopy?

Yes, the Hugo cube's larger volume is commonly used to carry a plant from late vegetative growth through flowering without another block change. That reduces the number of transplants a crop needs before harvest.