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)

84 Products

Sort By:

Lightweight Shallow Trays – 5 Count Support Trays

Quick Shop

Trays, Domes & Flats

Lightweight Shallow Trays – 5 Count

Jumbo Plug Inserts – 5 Count

Lightweight Deep Trays (with Holes) – 5 Count

Microgreens Reservoir Tray

Microgreens Accessory

Medium Weight Mesh Tray – 5 Count

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

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

Microgreens Growing Tray

Microgreens Accessory

128 Cell Plug Flats – 5 Count

SureRoots® 50-Cell Deep Plug Flats – 5 Count

20-Row Seed Flats – 5 Count

Heavyweight Mesh Tray – 5 Count

Soil Block Propagation Trays – 5 Count

Polypro 5x5 Insert Pots – Black, 24 Count

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

Pro-Tray 24 Cell Flats – 5 Count

5x5 Inserts – 5 Count

Microgreens Accessory

Polypro 5x5 Insert Pots – Blue, 8 Count