Rootrainers - Rapid (32 Cell) offer the perfect start for seeds, seedlings, plugs and cuttings, particularly those needing straight root growth. The 32-cell modular system with holding tray and propagating lid is reusable, and hinged openings allow easy inspection and removal for planting. Rapid Rootrainers suit bedding plants, salad and herbs, with a depth of 8.5cm (3in).