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:

Lightweight Shallow Trays – 36 Count Support Trays

Quick Shop

Trays, Domes & Flats

Lightweight Shallow Trays – 36 Count

5x5 Inserts – 100 Count

Microgreens Accessory

SureRoots® 50-Cell Deep Plug Flats – 25 Count

Polypro Mesh Shallow Tray, Black – 4 Count

Pro-Tray 38 Cell Flats – 100 Count

Jumbo Plug Inserts – 100 Count

Medium Weight Mesh Tray – 50 Count

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

Polypro 2.5" Insert Pots – Blue, 32 Count

Polypro Mesh Shallow Tray, Black – 24 Count

Polypro 2.5" Insert Pots – Blue, 8 Count

Heavyweight Mesh Tray – 50 Count

Polypro 5x5 Insert Pots – Black, 24 Count

Polypro 5x5 Insert Pots – Red, 24 Count

50 Cell Plug Flats – 100 Count

2" Clear Acrylic Domes – 50 Count

7" Clear Propagation Domes – 25 Count

200 Cell Plug Flats – 50 Count

Polypro 2.5" Insert Pots – Black, 8 Count

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

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

Lightweight Deep Trays (with Holes) – 100 Count

Pro-Tray 24 Cell Flats – 100 Count

Polypro 2.5" Insert Pots – Red, 8 Count

Polypro 2.5" Insert Pots – Red, 32 Count

Polypro Shallow Tray (With Holes), Black – 24 Count

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

Polypro Shallow Tray (With Holes), Red – 24 Count

Polypro Shallow Tray (With Holes), Blue – 24 Count

6-Cell Tray Inserts – 24 Count

Soil Block Propagation Trays – 5 Count

Paperpot Seedling Trays – 10 Count

Paperpot Transplanter Accessory

NanoDome – Single

LED or T5HO Strip Light Accessory

Soil Block Propagation Trays – 50 Count

NanoDome – 5 Count

LED or T5HO Strip Light Accessory

Paperpot Seedling Tray – Individual

Paperpot Transplanter Accessory