Grodan® Gro-Block™ 1.5" Mini-Blocks™ (45 Blocks/Pack)

Give seeds and cuttings a precise start in 1.5-inch stone wool blocks

Grodan® Gro-Block™ 1.5-inch Mini-Blocks™ are wrapped stone wool starter blocks for seed starting and plant propagation. The pore structure helps balance air and water around developing roots, while the compact size fits neatly into propagation trays and larger Grodan blocks.

• 45 mini-blocks per pack: Includes three strips of 15 blocks for organized propagation.
• 1.5-inch cube size: A compact starter format for seeds, cuttings, and young plants.
• Wrapped blocks: White plastic wrapping helps minimize algae exposure and supports cleaner handling.
• Balanced air and water: Stone wool pores help provide root-zone airflow and controlled moisture.
• Easy transplanting: Move rooted plugs into larger Grodan blocks or loose media such as coco fiber.
• Tray-friendly design: Set the blocks in a flat or compatible starter tray for a tidy propagation setup.

Specifications

• Brand: Grodan®
• Block size: 1.5 × 1.5 × 1.5 inches
• Pack size: 45 wrapped blocks
• Format: Three strips of 15 blocks
• Material: Stone wool

Use with a propagation tray and follow the growing-media preparation and irrigation guidance for your crop. Transplant once the starter plug has developed a healthy root system.