35mm Rockwool Rooting Plugs | Cultiwool Bulk

Built for commercial propagation, Cultiwool 35mm rockwool rooting plugs deliver uniform, scalable performance across high-volume hydroponic operations.

Why 35mm Rockwool Rooting Plugs?

Commercial propagation requires precision and repeatability. These 35mm rockwool plugs are engineered from clean, inert stone wool to provide consistent porosity, balanced moisture retention, and reliable oxygen availability at the root zone. Designed for professional environments, they help reduce variability across trays and improve transplant success rates.

• Uniform density: Consistent structure across every plug for predictable rooting.
• Optimized air-to-water ratio: Maintains hydration while preventing oversaturation.
• Inert media: Stable pH behavior with no added contaminants.
• Built for scale: Available in sheet, case, and pallet quantities for commercial programs.

Performance Features

• Pre-formed planting holes: Fast, repeatable seed and cutting placement.
• Balanced drainage: Promotes strong root initiation without waterlogging.
• Efficient transplanting: 35mm format integrates cleanly into larger block systems.
• Commercial reliability: Manufactured to meet professional cultivation standards.

Buying Options

• 1 Sheet — 84 plugs: Ideal for trials or small propagation runs.
• 25 Sheets — 2,100 plugs: Supports ongoing mid-scale production.
• Pallet — 375 Sheets / 31,500 plugs: Designed for perpetual commercial cycles.

How to Use

1. Pre-soak plugs in pH-adjusted water (5.5–5.8) until evenly saturated.
2. Insert seeds or cuttings into the pre-formed hole.
3. Maintain consistent moisture without prolonged saturation.
4. Transplant once strong white roots are visible through the plug.

Specifications

• Media: Stone wool (rockwool)
• Plug Size: 35mm class propagation plug
• Plugs per Sheet: 84
• Available Formats: Sheet, case, or pallet
• Applications: Cloning, seed starting, hydroponic propagation

FAQ

Are these plugs reusable?
No. For consistent commercial results, fresh plugs should be used each cycle.

Can they be used in hydroponic systems?
Yes. Rockwool is widely used in hydroponics for its stable moisture retention and oxygen availability.

How long do plants remain in plugs?
Typically 7–14 days, depending on crop and environment, until roots are ready for transplant.

Pro Tip

Stagger propagation trays weekly and maintain pallet inventory to ensure smooth transitions into vegetative stages without production bottlenecks.