Remove the limits.

You mastered steering. Now get the response you intended.

Grodan Max is engineered for experienced cannabis growers who want greater control, consistency and a more predictable root-zone response from propagation through harvest.

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Precision starts in propagation

For commercial cannabis growers who demand consistent crop performance from the very beginning of the cultivation cycle, Grodan Max Plugs are premium propagation plugs engineered for healthy, transplant-ready plants.

Featuring Vision Technology (V1.0), Grodan Max Plugs deliver the water-holding capacity, uniform water distribution and air-filled pore space needed to achieve irrigation control and flexibility, controlled dry down and highly uniform root development.

These characteristics support more predictable propagation performance and help growers capture more value from every propagation batch.

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What makes Grodan Max Plugs different?

Built for fast and highly uniform root development, excellent irrigation control and flexibility, and maximum usable transplants.

Fast and highly uniform root development

Grodan Max Plugs support initial root strike in as little as 8 days under optimal conditions while maintaining a controlled dry-back. Excellent air-filled pore space at container capacity, high water-holding capacity and uniform water distribution support fast, uniform root development and help more cuttings reach transplant readiness together.

Excellent irrigation control and flexibility

With high water-holding capacity, uniform water distribution, sufficient air-filled pore space and controlled dry down, Grodan Max Plugs give propagators a larger irrigation window while maintaining the moisture and air conditions needed for healthy root development. Uniform WC and EC distribution and predictable re-saturation after dry-back support a wide water content steering range.

Maximum usable transplants

Fast, uniform root development combined with controlled water management helps more cuttings develop strong root systems and reach transplant readiness within the target window, helping growers maximize the number of healthy, usable transplants from every propagation batch.

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Powered by Vision Technology

Grodan partnered with the Wageningen University and Research (WUR) to develop an innovative substrate technology specifically designed for cannabis cultivation. The result is Grodan Max.

Through the optimization of substrate design and manufacturing processes, Grodan Max delivers exceptional water dynamics, giving growers excellent irrigation control and flexibility with a wide WC% steering range. This enables fast, rapid root initiation supporting uniform crop development, improved yield performance and consistent quality.

Grodan Max is a substrate engineered to help growers maximize the value of every crop.

The more precisely you steer, the more your substrate matters.

Grodan Max gives experienced growers more freedom to fine-tune irrigation and crop-steering strategies for greater precision throughout the crop cycle.