The PLUG BOX 4x4x4cm – No Hole is a bulk pack of 750 Rockwool propagation cubes designed for growers who want complete control over their propagation process. With no pre-drilled hole, these plugs offer flexibility to insert seeds or cuttings exactly how and where you need—ideal for unconventional stem sizes or delicate rooting techniques.

Made from high-density, sterile Rockwool, these plugs offer excellent moisture retention and air porosity, ensuring consistent germination and strong root development across a wide variety of plants. Whether you’re growing from seed or cloning cuttings, this large-volume box is perfect for commercial-scale propagation or serious hobby growers.

Key Features:

• Cube Size: 4cm x 4cm x 4cm – compact and space-efficient

• Hole Type: No pre-drilled hole – fully customisable for various propagation styles

• Material: Inert, pH-neutral Rockwool – sterile and consistent

• Water Retention: Excellent moisture and air balance for strong root development

• Ideal For: Seedlings, cuttings, and cloning in hydroponic or soil-based systems

• Quantity: 750 plugs per box – ideal for high-volume growers

• 750 x 4x4x4cm Rockwool Propagation Plugs (No Hole)

• Packaged in a protective carton for easy storage and handling

How to Use the Product & Best Usage Recommendations:

Before using, soak the plugs in pH-adjusted water (5.5–6.0) to stabilise the medium and ensure ideal rooting conditions. Because these plugs come without a pre-drilled hole, you can manually insert seeds or cuttings according to their size and position preference—ideal for more delicate or specialised propagation work.

Place the plugs in trays or a humidity dome to encourage strong root growth in a controlled environment. Monitor moisture regularly and avoid overwatering. Once rooted, transfer plugs directly into larger blocks, pots, or hydroponic systems.

Store unused plugs in a dry, dust-free location to preserve their quality.