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

85 Products

Sort By:

Pro-Tray 72 Cell Flats – 5 Count Cell Flats

Quick Shop

Trays, Domes & Flats

Pro-Tray 72 Cell Flats – 5 Count

Lightweight Deep Trays – 100 Count

Heavyweight Mesh Tray – 5 Count

200 Cell Plug Flats – 5 Count

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

SureRoots® 50-Cell Deep Plug Flats – 25 Count

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

20-Row Seed Flats – 50 Count

Polypro 5x5 Insert Pots – Red, 24 Count

Pro-Tray 38 Cell Flats – 100 Count

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

Polypro 5x5 Insert Pots – Blue, 24 Count

Lightweight Shallow Trays – 36 Count

Medium Weight Mesh Tray – 50 Count

Medium Weight Mesh Tray – 5 Count

NanoDome – 5 Count

LED or T5HO Strip Light Accessory

Paperpot Seedling Tray – Individual

Paperpot Transplanter Accessory

2" Clear Acrylic Domes – 50 Count

Soil Block Propagation Trays – 50 Count

5x5 Inserts – 100 Count

Microgreens Accessory

Polypro Mesh Deep Tray, Black – 4 Count

7" Clear Propagation Domes – 25 Count

72 Cell Plug Flats – 100 Count

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

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

Jumbo Plug Inserts – 100 Count

50 Cell Plug Flats – 100 Count

Polypro Mesh Shallow Tray, Black – 4 Count

Lightweight Shallow Trays (with Holes) – 100 Count

NanoDome – 25 Count

LED or T5HO Strip Light Accessory

Heavyweight Mesh Tray – 50 Count

Polypro 2.5" Insert Pots – Blue, 32 Count

Polypro 2.5" Insert Pots – Red, 32 Count

Lightweight Deep Trays (with Holes) – 100 Count

Polypro Mesh Deep Tray, Black – 24 Count

200 Cell Plug Flats – 50 Count