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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245 Products

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Johnny's Handheld Soil Blocker Set Soil Blocking

Johnny's Handheld Soil Blocker Set

Sold together for 50-cell and 72-cell 1020 tray formats.

Lightweight Shallow Trays – 36 Count Support Trays

Lightweight Shallow Trays – 36 Count

A great multi-use tray for any operation.

Hanging Clips Grow Lights and Carts

Hanging Clips

LED or T5HO Strip Light Accessory

Ideal for suspending SunBlaster lighting above your growing area.

Johnny's 512 Mix – 2-Yard Bulk (bagged) Growing Media

Johnny's 512 Mix – 2-Yard Bulk (bagged)

LED Mini Greenhouse Kit LED

LED Mini Greenhouse Kit

Great way to grow your own seedling starts.

3 1/8" Round Fertil Pots – 1,370 Count Biodegradable Pots

3 1/8" Round Fertil Pots – 1,370 Count

100% organic, OMRI Listed® biodegradable pots.

Polypro 2.5" Insert Pots – Black, 8 Count Plastic Pots

Polypro 2.5" Insert Pots – Black, 8 Count

Resilient and reusable.

72 Cell Plug Flats – 100 Count Cell Flats

72 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

20 Cell Fertil Pots Strip – 87 Count Biodegradable Pots

20 Cell Fertil Pots Strip – 87 Count

100% organic, OMRI Listed® biodegradable pots.

Johnny's Seedling Heat Mat – 20.75" x 20.75" Seedling Heat Mats

Johnny's Seedling Heat Mat – 20.75" x 20.75"

Improved germination for heat-loving crops.

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

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

Solid trays without holes (for bottom watering and support).

128 Cell Plug Flats – 50 Count Cell Flats

128 Cell Plug Flats – 50 Count

Designed for fresh market growers. Square cells.

Link Cord – 14" Grow Lights and Carts

Link Cord – 14"

LED or T5HO Strip Light Accessory

Add on to your strip lights for more growing space.

Growlight Garden Seed Starter Kits

Growlight Garden

Complete kit for growing a garden in your home.

Pro-Tray 24 Cell Flats – 100 Count Cell Flats

Pro-Tray 24 Cell Flats – 100 Count

For home and market gardeners. Round cells.

Pro-Tray 38 Cell Flats – 100 Count Cell Flats

Pro-Tray 38 Cell Flats – 100 Count

For home and market gardeners. Round cells.

Seed Plate C72 Seed Starting Supplies

Seed Plate C72

Precision Vacuum Seeder Accessory

72 small plain holes (not countersunk), size C.

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

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

Johnny's thickest wall trays.

50 Cell Plug Flats – 100 Count Cell Flats

50 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

Polypro 5x5 Insert Pots – Blue, 24 Count Plastic Pots

Polypro 5x5 Insert Pots – Blue, 24 Count

Resilient and reusable.

Deluxe Microgreens Seed Starter Kit Microgreens Supplies

Deluxe Microgreens Seed Starter Kit

Grow microgreens indoors year-round.

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

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

Solid shallow trays with holes (for drainage).

Connector Set LED

Connector Set

Johnny's Modular LED Grow Light Cart Accessory

Locks two Johnny's Modular LED Grow Light Carts together.

Paperpot Seedling Tray – Individual Transplanters

Paperpot Seedling Tray – Individual

Paperpot Transplanter Accessory

Tray sized specifically for Paper Chain Pots.

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

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

Solid shallow trays with holes (for drainage).

200 Cell Plug Flats – 50 Count Cell Flats

200 Cell Plug Flats – 50 Count

Designed for fresh market growers. Square cells.

Polypro 2.5" Insert Pots – Blue, 8 Count Plastic Pots

Polypro 2.5" Insert Pots – Blue, 8 Count

Resilient and reusable.

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

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

Solid shallow trays with holes (for drainage).

Seed Plate C200 Seed Starting Supplies

Seed Plate C200

Precision Vacuum Seeder Accessory

200 small plain holes (not countersunk), size C.

36 Cell Fertil Pots Strip – 144 Count Seed Starting Supplies

36 Cell Fertil Pots Strip – 144 Count

100% organic, OMRI Listed® biodegradable pots.

SureRoots® 50-Cell Deep Plug Flats – 25 Count Cell Flats

SureRoots® 50-Cell Deep Plug Flats – 25 Count

Promotes deeper root development.

Polypro 2.5" Insert Pots – Red, 8 Count Plastic Pots

Polypro 2.5" Insert Pots – Red, 8 Count

Resilient and reusable.

Seed Plate A72 Seed Starting Supplies

Seed Plate A72

Precision Vacuum Seeder Accessory

72 large countersunk holes, size A.

12-Cell Stand-up Soil Blocker Soil Blocking

12-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

6-Cell Stand-up Soil Blocker Soil Blocking

6-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

35-Cell Stand-up Soil Blocker Soil Blocking

35-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.