Take full control of your propagation with the Grodan GRO-Smart Tray Insert. Designed for durability and versatility, this double-sided hard plastic insert fits standard 10 x 20 propagation flats to support uniform root development across 78 cells.
Quick Technical Specifications
| Feature | Specification Details |
| Brand | The frog |
| Product Type | Propagation Tray Insert |
| Colour | Terracotta |
| Cell Count | 78 Cells (per side) |
| Compatibility | A-OK Starter Plugs, Macroplugs, Mini-Blocks, Gro-Blocks |
| Flat Size Fit | Standard 10 x 20 Propagation Flat |
| Material | Heavy-Duty Hard Plastic |
| Design | Double-Sided Reusable Insert |
| Cleaning | Dishwasher Safe |
Smart Propagation for Healthy Root Development
The Grodan GRO-Smart Tray Insert is built specifically for growers seeking a clean, efficient, and re-usable cloning and seedling foundation. Unlike flimsy single-use inserts, the GRO-Smart tray is constructed from durable terra-cotta hard plastic that holds its shape, making handling and transportation effortless.
Designed to fit snugly into standard 10 x 20 propagation flats, this insert provides the ideal spacing and support for your rockwool cubes, ensuring optimal air circulation, balanced drainage, and healthy air-pruning for young root systems.
Key Benefits & Features
Reusable Double-Sided Versatility
Engineered with a practical double-sided design, the GRO-Smart tray maximizes utility and longevity. One side provides 78 precision-shaped cells to keep starter plugs securely upright, preventing movement and root disturbance during watering or inspection.
Broad Rockwool Plug Compatibility
Whether you are starting seeds or taking cuttings, this tray seamlessly fits a wide variety of Grodan rockwool media, including:
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A-OK Starter Plugs
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Macroplugs
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Mini-Blocks & Gro-Blocks
Dishwasher Safe & Hygienic
Maintaining a sterile propagation area is crucial for stopping root rot and dampening off before it starts. The high-grade hard plastic construction makes the tray completely dishwasher safe, allowing you to sterilize and reuse it cycle after cycle without warping or degrading.
Improved Airflow & Drainage
The open-bottom design of each cell promotes proper drainage and air exchange around the base of your rockwool plugs, preventing standing water buildup while encouraging strong, white feeder roots.
How to Use the GRO-Smart Tray Insert
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Place: Fit the GRO-Smart insert directly inside a standard 10 x 20 propagation flat (with or without drainage holes).
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Load: Insert your pre-soaked Grodan A-OK plugs, Macroplugs, or Mini-Blocks into the 78 cells.
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Propagate: Insert your seeds or cuttings and cover with a compatible propagation dome to maintain humidity.
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Clean & Reuse: After transplanting, run the insert through a dishwasher or wash thoroughly with grow room disinfectant for your next run.
Frequently Asked Questions
Does this insert fit standard seed trays?
Yes, it is specifically sized to fit all standard 10 x 20 inch propagation flats and tray bases.
Can I wash this tray with hot water?
Absolutely. The hard plastic material is heat-resistant and dishwasher safe for easy cleaning between propagation cycles.
Why Buy Propagation Supplies from Hydro Land?
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Proven Equipment: We stock trusted horticultural brands designed to give your plants the best start possible.
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Fast & Discreet Shipping: Plain packaging delivered straight to your door across the UK.
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Expert Support: Real guidance from experienced growers who understand successful plant propagation.
