Grodan 77 Stuks

The Grodan Propagation Tray holds 77 pre-formed rockwool plugs designed for cloning and seed starting. Rockwool provides excellent water retention while maintaining proper airflow to developing roots, ensuring even and reliable rooting across the entire tray. Suitable for both hobby growers and professional setups. Order yours today at Plant & Flower.

Delivery : friday

2 Year Warranty 30 days retour

Grodan 77 Plugs – rockwool propagation tray for consistent rooting

Healthy roots start with the right medium. The Grodan 77 Plugs propagation tray gives you 77 individual rockwool cubes on a single compact sheet, ready to receive cuttings or seeds. Grodan rockwool has been trusted by growers worldwide for decades. Browse our full cloning and propagation range for more options.

Why rockwool works

Rockwool is an inert, sterile substrate that holds moisture without becoming waterlogged. Each plug maintains the same air-to-water ratio, giving every cutting an equal chance to develop a strong root system. Because rockwool is chemically neutral, it won't interfere with your nutrient solution or pH levels.

Scalable for any setup

The 77-plug format fits standard propagation trays and humidity domes. Need more capacity? The Grodan 150 Plugs tray doubles your output. If you prefer an organic alternative, consider the Root Riot Tray 77 Cubes, which uses a composted material base.

Quick preparation

Before use, soak the tray briefly in pH-adjusted water (around 5.5) and let it drain. The plugs are then ready for insertion of cuttings or seeds. No additional preparation is required, making this tray a straightforward choice for growers who value efficiency.

Order the Grodan 77 Plugs at Plant & Flower for fast shipping across Belgium.

Can I reuse Grodan rockwool plugs after a propagation cycle?

Grodan rockwool plugs are designed for single use. After rooting, the plug is transplanted together with the cutting into a larger growing medium. Reusing plugs is not recommended as they may harbour pathogens or have an altered structure that reduces performance.

How do I prepare the Grodan 77 tray before use?

Soak the entire tray in pH-adjusted water (around 5.5) for a few minutes, then let excess water drain off. The plugs will be evenly moist and ready for cuttings or seeds. Avoid squeezing the plugs as this damages their internal structure.

What is the difference between Grodan rockwool and Root Riot for propagation?

Grodan rockwool is an inert mineral substrate that gives full control over nutrients and pH. Root Riot uses an organic composted material that provides a small amount of natural nutrition. Both work well for cloning; the choice depends on your preferred growing method.