Seed Starting Trays, Domes & Flats | Johnny's Selected Seeds

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Johnny's offers a selection of seed starting trays, flats, and humidity domes to accommodate whatever it is you decide to grow. All of our seedling products follow industry 1020 tray standard size (actual footprint: 11" x 21"). We offer supplies that are economical enough to be disposable, but are heavy-duty enough to be reusable over multiple seasons, including: germination trays with and without drainage holes; microgreens trays; mesh trays; cell flats; and clear plastic domes. Available in small and case quantities. To compare products, including compatibility across products, see our Trays, Domes & Flats Comparison Chart (at right).

Seed Starting Flats, Trays, Domes & Pots—Comparison Charts

90 Products

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New

Johnny's 72-Cell Air-Pruning Tray – 4 Count Cell Flats

Johnny's 72-Cell Air-Pruning Tray – 4 Count

Promote healthy root growth.

New

Johnny's 72-Cell Air-Pruning Tray – 1 Count Cell Flats

Johnny's 72-Cell Air-Pruning Tray – 1 Count

Promote healthy root growth.

New

Frosted Humidity Dome – 6" Humidity Domes

Frosted Humidity Dome – 6"

Better light distribution.

New

Johnny's 72-Cell Air-Pruning Tray – 24 Count Cell Flats

Johnny's 72-Cell Air-Pruning Tray – 24 Count

Promote healthy root growth.

New

Frosted Humidity Dome – 2.5" Humidity Domes

Frosted Humidity Dome – 2.5"

Better light distribution.

New

Johnny's 50-Cell Air-Pruning Tray – 24 Count Cell Flats

Johnny's 50-Cell Air-Pruning Tray – 24 Count

Promote healthy root growth.

Out Of Stock

New

Johnny's 50-Cell Air-Pruning Tray – 1 Count Cell Flats

Johnny's 50-Cell Air-Pruning Tray – 1 Count

Promote healthy root growth.

Out Of Stock

New

Johnny's 50-Cell Air-Pruning Tray – 4 Count Cell Flats

Johnny's 50-Cell Air-Pruning Tray – 4 Count

Promote healthy root growth.

Out Of Stock

Microgreens Reservoir Tray Microgreens Supplies

Microgreens Reservoir Tray

Microgreens Accessory

Durable and reusable.

Microgreens Growing Tray Microgreens Supplies

Microgreens Growing Tray

Microgreens Accessory

Durable and reusable.

Polypro Endurance Deep Tray (No Holes), Red – 4 Count Support Trays

Polypro Endurance Deep Tray (No Holes), Red – 4 Count

Johnny's thickest wall trays.

Polypro Endurance Deep Tray (No Holes), Blue – 4 Count Support Trays

Polypro Endurance Deep Tray (No Holes), Blue – 4 Count

Johnny's thickest wall trays.