Grodan 1.5" x 1.5" x 1.5" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes

Starter Mini-Blocks can sit in a tray (flat) without support for easy starting of seeds and cuttings. For best results put them on the flat side of the Gro-Smart Tray to ensure good airflow around the cubes. Remove wrapping and transplant into any loose media such as Grow-cubes or Grow-Chunks, or leave wrapping on and set on top of a larger Gro-Block. The advantage Mini-Blocks have over A-OK Starter Plugs and Macro Plugs is that Mini-Blocks can sit in a tray without any support.

• Improved homogeneity
• Optimum robustness and flexibility
• Ideal air/water balance
• Consistent shape of the seed hole
• Identically shaped plugs, Root development through the entire plug