Seed Starting Supplies | Johnny's Selected Seeds

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Johnny's offers all the seed-starting and propagation supplies you need to grow your own professional-quality seedlings with efficiency. Growing your own transplants from seed provides greater control over the growing season, from start to finish, by allowing you to choose your favorite varieties, select specific planting and transplanting dates, and produce the quantities of plants you need.

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50-Cell Conversion Kit Soil Blocking

50-Cell Conversion Kit

Johnny's Commercial Soil Blocker Accessory

Convert your 72-cell blocker to a 50-cell configuration.

Lightweight Deep Trays – 100 Count Support Trays

Lightweight Deep Trays – 100 Count

The standard 1020 greenhouse flat without drainage slots.

New

72-Cell Grid Soil Blocking

72-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

Heavyweight Mesh Tray – 5 Count Support Trays

Heavyweight Mesh Tray – 5 Count

Heavy duty support for other seedling containers.

72 Cell Plug Flats – 100 Count Cell Flats

72 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

Smart Pot® – 20 Gal. Grow Bags

Smart Pot® – 20 Gal.

Fabric planters promote healthy roots.

Smart Pot® Natural – 15 Gal. Grow Bags

Smart Pot® Natural – 15 Gal.

Fabric planters promote healthy roots.

Seed Plate A200 Seed Starting Supplies

Seed Plate A200

Precision Vacuum Seeder Accessory

200 large countersunk holes, size A.

50 Cell Plug Popper Seed Starting Supplies

50 Cell Plug Popper

TO Plastic Tray Accessory

Save time when transplanting.

LED Strip Light – 48" Grow Lights and Carts

LED Strip Light – 48"

Design your own custom seedling growing space.

Jumbo Square Plastic Pots – 200 Count Plastic Pots

Jumbo Square Plastic Pots – 200 Count

For very large seedlings such as squash and pumpkins.

7" Clear Propagation Domes – 25 Count Humidity Domes

7" Clear Propagation Domes – 25 Count

Create the perfect healing chamber for grafted tomatoes.

Big Bag Bed – Jr. Raised Beds & Planters

Big Bag Bed – Jr.

Instant raised beds for growing healthy plants.

6-Cell Stand-up Soil Blocker Soil Blocking

6-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

Smart Pot® – 15 Gal. Grow Bags

Smart Pot® – 15 Gal.

Fabric planters promote healthy roots.

Seed Plate B72 Seed Starting Supplies

Seed Plate B72

Precision Vacuum Seeder Accessory

72 medium plain holes (not countersunk), size B.

35-Cell Stand-up Soil Blocker Soil Blocking

35-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

12 Cell Fertil Pots Strip – 64 Count Biodegradable Pots

12 Cell Fertil Pots Strip – 64 Count

100% organic, OMRI Listed® biodegradable pots.

New

50-Cell Grid Soil Blocking

50-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

20-Row Seed Flats – 50 Count Cell Flats

20-Row Seed Flats – 50 Count

Ideal for seed starting.

Pro-Tray 24 Cell Flats – 5 Count Cell Flats

Pro-Tray 24 Cell Flats – 5 Count

For home and market gardeners. Round cells.

Seed Plate D200 Seed Starting Supplies

Seed Plate D200

Precision Vacuum Seeder Accessory

200 medium countersunk holes, size D.

50 Cell Plug Flats – 100 Count Cell Flats

50 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

18 Cell Fertil Pots Strip – 10 Count Biodegradable Pots

18 Cell Fertil Pots Strip – 10 Count

100% organic, OMRI Listed® biodegradable pots.

Smart Pot® – 3 Gal. Grow Bags

Smart Pot® – 3 Gal.

Fabric planters promote healthy roots.

20 Cell Fertil Pots Strip – 87 Count Biodegradable Pots

20 Cell Fertil Pots Strip – 87 Count

100% organic, OMRI Listed® biodegradable pots.

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

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

Solid shallow trays with holes (for drainage).

8 and 16-Tray Light Cart Replacement LED Tube – 48", 1 Count LED

8 and 16-Tray Light Cart Replacement LED Tube – 48", 1 Count

Replacement tube for #6221 and #6248 light carts.

Lightweight Shallow Trays (with Holes) – 100 Count Support Trays

Lightweight Shallow Trays (with Holes) – 100 Count

Slots for uniform drainage.

Wall Flower Hanging Planter – Saddle Bag Grow Bags

Wall Flower Hanging Planter – Saddle Bag

Ideal for growers with limited space.

Polypro 5x5 Insert Pots – Black, 8 Count Plastic Pots

Polypro 5x5 Insert Pots – Black, 8 Count

Resilient and reusable.

Out Of Stock

Seed Plate D128 Seed Starting Supplies

Seed Plate D128

Precision Vacuum Seeder Accessory

128 medium countersunk holes, size D.

Paperpot Seedling Tray – Individual Transplanters

Paperpot Seedling Tray – Individual

Paperpot Transplanter Accessory

Tray sized specifically for Paper Chain Pots.

NanoDome – 25 Count Grow Lights and Carts

NanoDome – 25 Count

LED or T5HO Strip Light Accessory

Humidity dome with groove for resting a grow light.

Lightweight Deep Trays (with Holes) – 100 Count Support Trays

Lightweight Deep Trays (with Holes) – 100 Count

The standard 1020 greenhouse flat with drainage slots.

2 1/3" Round Fertil Pots – 3,000 Count Biodegradable Pots

2 1/3" Round Fertil Pots – 3,000 Count

100% organic, OMRI Listed® biodegradable pots.