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 Chart (PDF)

85 Products

Sort By:

Quick Shop

Trays, Domes & Flats

72 Cell Plug Flats – 5 Count

50 Cell Plug Flats – 5 Count

128 Cell Plug Flats – 5 Count

Lightweight Deep Trays (with Holes) – 5 Count

Polypro 5x5 Insert Pots – Black, 8 Count

Lightweight Shallow Trays – 5 Count

5x5 Inserts – 5 Count

Microgreens Accessory

Jumbo Plug Inserts – 5 Count

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

Polypro 5x5 Insert Pots – Blue, 8 Count

7" Clear Propagation Domes – 5 Count

Pro-Tray 38 Cell Flats – 5 Count

Heavyweight Mesh Tray – 5 Count

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

Pro-Tray 72 Cell Flats – 5 Count

Polypro 5x5 Insert Pots – Black, 24 Count

Polypro 5x5 Insert Pots – Blue, 24 Count

Medium Weight Mesh Tray – 5 Count

20-Row Seed Flats – 5 Count

Pro-Tray 24 Cell Flats – 5 Count

20-Row Seed Flats – 50 Count

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

Polypro Shallow Tray (With Holes), Multi – 6 Count

Polypro Mesh Shallow Tray, Black – 4 Count

Polypro 2.5" Insert Pots – Black, 32 Count

6-Cell Tray Inserts – 6 Count

128 Cell Plug Flats – 50 Count

Lightweight Shallow Trays (with Holes) – 5 Count

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

Lightweight Shallow Trays (with Holes) – 100 Count

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

5x5 Inserts – 100 Count

Microgreens Accessory

Polypro Shallow Tray (With Holes), Blue – 4 Count

Polypro Shallow Tray (With Holes), Black – 4 Count

Polypro 5x5 Insert Pots – Red, 8 Count

200 Cell Plug Flats – 5 Count