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

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

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Polypro 2.5" Insert Pots – Black, 32 Count Plastic Pots

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Trays, Domes & Flats

Polypro 2.5" Insert Pots – Black, 32 Count

Polypro Mesh Deep Tray, Black – 24 Count

Polypro Shallow Tray (No Holes), Black – 4 Count

Polypro 5x5 Insert Pots – Blue, 8 Count

50 Cell Plug Flats – 5 Count

128 Cell Plug Flats – 50 Count

Lightweight Shallow Trays – 5 Count

Pro-Tray 72 Cell Flats – 5 Count

Polypro 5x5 Insert Pots – Red, 8 Count

Lightweight Shallow Trays (with Holes) – 5 Count

7" Clear Propagation Domes – 5 Count

2" Clear Acrylic Domes – 50 Count

Polypro Endurance Deep Tray (No Holes), Black – 24 Count

Jumbo Plug Inserts – 100 Count

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

20-Row Seed Flats – 5 Count

SureRoots® 50-Cell Deep Plug Flats – 25 Count

Medium Weight Mesh Tray – 5 Count