Grodan® Pro A-OK Starter Plugs™, 1.5" Square Plugs, No Shrink Wrap, 98 Plugs/Sheet (30 Sheets/Case)

Grodan A-OK 1.5" Stone Wool Starter Plugs, 30 Sheets/Case

Grodan A-OK Starter Plugs give seeds and cuttings a uniform, professional-grade start. Each finely woven stone wool plug holds water, nutrients, and pH evenly across the whole sheet, so germination is consistent and every seedling is ready to transplant on the same schedule.

Why growers choose A-OK Starter Plugs

• Uniform density and fibrous structure: even water, nutrient, and pH distribution for dependable germination results.
• 1.5" square plugs, 98 per sheet: bare sheets sized to fit a standard 10 x 20 propagation tray, with 30 sheets per case.
• Tapered bottoms: plugs slide out cleanly for improved transplanting.
• Built for the next step: formulated for starting seeds and rooting cuttings before plugging into Grodan Gro-Blocks.
• Hydroponic ready: an ideal plug for crops grown in hydroponic systems.

Product details

• Plug size: 1.5" A-OK plugs (1.4" x 1.4" x 1.6"), square format connected at the top of the sheet.
• Packaging: no shrink wrap, no labels, and no instructions, just bare sheets for high-volume propagation.
• Case count: 30 sheets per case, 98 plugs per sheet.

How to use

Moisten the plugs, sow seeds or insert cuttings, and keep them in a propagation tray with your preferred humidity dome. Once roots show at the plug surface, transplant straight into Gro-Blocks, pots, or your hydroponic system. Looking for shrink-wrapped sheets instead? We carry the shrink-wrapped version of these plugs too.