RooTrimmer 3" Square 18-Cell Seedling Trays (10x20) No-Hole 2.9" Deep Reusable Nursery Trays

RooTrimmer 3 inch square 18-cell seedling trays are heavy-duty, reusable 1020-style nursery trays designed to start and transport seedlings without drainage holes.

These RooTrimmer 18-cell plug trays combine a compact 3-inch square cell size with a no-hole 1020 base to give growers a tidy, water-retentive platform for germination, potting up, and short-term propagation. Built from thicker plastic than disposable flats, the trays stack, nest, and resist warping so you can reuse them season after season. They’re sized to match standard 10" x 20" nursery bench systems while keeping each seedling in its own removable compartment.

How do these trays simplify seed starting at home or in a greenhouse?

RooTrimmer trays give each seed its own 3-inch square cell, which keeps roots separate and reduces shock during transplant. The no-hole 1020 base holds water for bottom-watering and keeps humidity higher around young seedlings.

• 18 large cells per tray for orderly seedling placement
• No-drill 1020 base supports bottom watering and trays on heat mats
• Reusable, thick plastic reduces need for one-time plastics
• Fits standard 10" x 20" greenhouse benches and shelves

What are the dimensions and material benefits I should expect?

Each nursery tray measures roughly 21.25" x 11" with 2.36" height and 18 individual 3" square cells that are 2.9" deep. The trays use heavy-duty plastic about 1.8 mm thick to resist cracking, bending, and warping during regular use and cleaning.

• Overall footprint designed to match 1020 commercial trays
• Deep, square cells (approx. 2.9" depth) for healthy root development
• Durable plastic construction for repeated seasons
• Lightweight and easy to move at 277g per tray

How do these trays support different propagation methods and accessories?

The RooTrimmer 18-cell system works with common propagation tools: seed domes, heat mats, peat plugs, and small nursery pots. The no-hole base makes the trays compatible with bottom-watering and temporary humidity control while still allowing you to transplant seedlings easily when ready.

• Compatible with seed-starting domes and heat mats for faster germination
• Works well for microgreens, seedlings, and hydroponic starts
• Ideal for labeling individual varieties to stay organized
• Reusable design cuts costs and ensures consistent plant care

Will these trays fit into my existing nursery setup or home garden station?

Yes — they’re designed to fit the common 1020 tray dimensions used in both home and commercial operations. Their space-saving footprint and stackability make them useful on benches, shelves, greenhouse carts, and balconies.

• Designed to nest and stack for compact storage
• Standard 10" x 20" compatibility with commercial benches
• Portable and easy to handle for indoor/outdoor use
• Works well in small spaces such as patios and window benches

Who this is for: Growers who need a durable, reusable seed-starting solution that fits standard nursery infrastructure — from hobby gardeners starting herbs and vegetables to commercial nurseries running propagation benches. Choose RooTrimmer 18-cell 1020 trays if you want consistent spacing, sturdy construction, easier bottom-watering, and a tray that withstands frequent handling while keeping seedlings organized and ready for transplant.