Seed Starting Trays, Domes & Flats | Johnny's Selected Seeds

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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 durable enough to be reusable over multiple seasons, including: germination trays with and without drainage holes; 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).

Trays, Domes & Flats | Comparison Chart (PDF)

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Jumbo Square Plastic Pots – 8 Count Plastic Pots

Jumbo Square Plastic Pots – 8 Count

For very large seedlings such as squash and pumpkins.

For very large seedlings such as squash and pumpkins.

Pro-Tray 72 Cell Flats – 5 Count Cell Flats

Pro-Tray 72 Cell Flats – 5 Count

For home and market gardeners. Round cells.

For home and market gardeners. Round cells.

20-Row Seed Flats – 5 Count Cell Flats

20-Row Seed Flats – 5 Count

Ideal for seed starting.

Ideal for seed starting.

Hard Plastic Perma-Nest Trays – 6 Count Trays, Domes, and Flats

Hard Plastic Perma-Nest Trays – 6 Count

Durable trays for our Seedling Light Carts.

Durable trays for our Seedling Light Carts.

Maxi Square Plastic Pots – 540 Count Plastic Pots

Maxi Square Plastic Pots – 540 Count

For larger seedlings like peppers and tomatoes.

For larger seedlings like peppers and tomatoes.

Lightweight Mesh Tray – 50 Count Support Trays

Lightweight Mesh Tray – 50 Count

Compact, low-cost support for other containers.

Compact, low-cost support for other containers.

200 Cell Plug Flats – 5 Count Cell Flats

200 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

Designed for fresh market growers. Square cells.

Shallow Germination Trays – 5 Count Support Trays

Shallow Germination Trays – 5 Count

Slots for uniform drainage.

Slots for uniform drainage.

Soil Block Propagation Trays – 50 Count Trays, Domes, and Flats

Soil Block Propagation Trays – 50 Count

These wide-mesh bottom trays are ideal for soil block propagation.

These wide-mesh bottom trays are ideal for soil block propagation.

5 1/2" Vented Humidity Dome – 4 Count Grow Lights and Carts

5 1/2" Vented Humidity Dome – 4 Count

Perma-Nest Tray Accessory

Tall domes for Perma-Nest Trays.

Tall domes for Perma-Nest Trays.

3" Humidity Dome – 6 Count Grow Lights and Carts

3" Humidity Dome – 6 Count

Perma-Nest Tray Accessory

Standard domes for Perma-Nest Trays.

Standard domes for Perma-Nest Trays.

Shallow Leakproof Trays – 5 Count Support Trays

Shallow Leakproof Trays – 5 Count

A great multi-use tray for any operation.

A great multi-use tray for any operation.

128 Cell Plug Flats – 100 Count Cell Flats

128 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

Designed for fresh market growers. Square cells.

3" Humidity Dome – 24 Count Grow Lights and Carts

3" Humidity Dome – 24 Count

Perma-Nest Tray Accessory

Rests on top of Perma-Nest trays.

Rests on top of Perma-Nest trays.

Mini Square Plastic Pots – 540 Count Plastic Pots

Mini Square Plastic Pots – 540 Count

For big stocky transplants.

For big stocky transplants.

Johnny's Exclusive

2" Clear Acrylic Domes – 50 Count Humidity Domes

2" Clear Acrylic Domes – 50 Count

Holds moisture and warmth for germination.

Holds moisture and warmth for germination.

Seedling Trays – 100 Count Support Trays

Seedling Trays – 100 Count

The standard 1020 greenhouse flat with drainage slots.

The standard 1020 greenhouse flat with drainage slots.

Heavyweight Mesh Tray – 5 Count Support Trays

Heavyweight Mesh Tray – 5 Count

Heavy duty support for other seedling containers.

Heavy duty support for other seedling containers.

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