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)

69 Products

Quick Shop

Trays, Domes & Flats

Jumbo Plug Inserts – 5 Count

20-Row Seed Flats – 5 Count

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

6-Cell Tray Inserts – 6 Count

Lightweight Deep Trays (with Holes) – 5 Count

Lightweight Shallow Trays – 5 Count

72 Cell Plug Flats – 100 Count

7" Clear Propagation Domes – 5 Count

Lightweight Shallow Trays (with Holes) – 5 Count

SureRoots 50-Cell Deep Plug Flats – 5 Count

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

128 Cell Plug Flats – 50 Count

200 Cell Plug Flats – 5 Count

5x5 Inserts – 100 Count

Microgreens Accessory

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

Pro-Tray 38 Cell Flats – 5 Count

6-Cell Tray Inserts – 24 Count

Polypro Shallow Tray (No Holes), Black – 24 Count

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

Pro-Tray 72 Cell Flats – 5 Count

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

Medium Weight Mesh Tray – 50 Count

Polypro Mesh Deep Tray, Black – 24 Count

20-Row Seed Flats – 50 Count

Lightweight Deep Trays (with Holes) – 100 Count

2" Clear Acrylic Domes – 50 Count

7" Clear Propagation Domes – 25 Count

Heavyweight Mesh Tray – 50 Count

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

Pro-Tray 24 Cell Flats – 5 Count

SureRoots 50-Cell Deep Plug Flats – 25 Count

Lightweight Deep Trays – 100 Count

50 Cell Plug Flats – 100 Count

Lightweight Shallow Trays – 36 Count

Lightweight Shallow Trays (with Holes) – 100 Count

Jumbo Plug Inserts – 100 Count