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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243 Products

Lightweight Deep Trays – 5 Count Support Trays

Lightweight Deep Trays – 5 Count

The standard 1020 greenhouse flat without drainage slots.

72 Cell Plug Flats – 5 Count Cell Flats

72 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

2" Clear Acrylic Domes – 5 Count Humidity Domes

2" Clear Acrylic Domes – 5 Count

Holds moisture and warmth for germination.

20-Cell Handheld Soil Blocker Soil Blocking

20-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

50 Cell Plug Flats – 5 Count Cell Flats

50 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

Johnny's Germination Mix – 20 Qt. Growing Media

Johnny's Germination Mix – 20 Qt.

Consistently a top performer in our annual germination trials.

4-Cell Handheld Soil Blocker Soil Blocking

4-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

Polypro Endurance Deep Tray (No Holes), Black – 4 Count Support Trays

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

Johnny's thickest wall trays.

Terrafibre Hemp Grow Mats, 5" x 5" – 40 Count Microgreens Supplies

Terrafibre Hemp Grow Mats, 5" x 5" – 40 Count

Microgreens Accessory

Microgreens media made from a renewable resource.

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

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

Johnny's thickest wall trays.

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

Polypro 5x5 Insert Pots – Black, 8 Count

Resilient and reusable.

128 Cell Plug Flats – 5 Count Cell Flats

128 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

Johnny's 512 Mix – 20 Qt. Growing Media

Johnny's 512 Mix – 20 Qt.

LED Propagation Rack Kit Grow Lights and Carts

LED Propagation Rack Kit

An energy-efficient solution for growing plants indoors.

Fort Vee All-Purpose Potting Mix – 20 Qt Growing Media

Fort Vee All-Purpose Potting Mix – 20 Qt

A popular mix for the professional grower.

Johnny's 512 Mix – 60 Qt. Growing Media

Johnny's 512 Mix – 60 Qt.

Maxi Square Plastic Pots – 18 Count Plastic Pots

Maxi Square Plastic Pots – 18 Count

For larger seedlings like peppers and tomatoes.

5-Cell Handheld Soil Blocker Soil Blocking

5-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

3 1/8" Round Fertil Pots – 90 Count Biodegradable Pots

3 1/8" Round Fertil Pots – 90 Count

100% organic, OMRI Listed® biodegradable pots.

20-Row Seed Flats – 5 Count Cell Flats

20-Row Seed Flats – 5 Count

Ideal for seed starting.

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

Polypro 5x5 Insert Pots – Blue, 8 Count

Resilient and reusable.

Polypro 2.5" Insert Pots – Black, 32 Count Plastic Pots

Polypro 2.5" Insert Pots – Black, 32 Count

Resilient and reusable.

12 Cell Fertil Pots Strip – 8 Count Biodegradable Pots

12 Cell Fertil Pots Strip – 8 Count

100% organic, OMRI Listed® biodegradable pots.

5x5 Inserts – 5 Count Microgreens Supplies

5x5 Inserts – 5 Count

Microgreens Accessory

Ideal for small microgreen plantings.

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

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

Johnny's thickest wall trays.

Johnny's Seedling Heat Mat – 9" x 19.5" Seedling Heat Mats

Johnny's Seedling Heat Mat – 9" x 19.5"

Improved germination for heat-loving crops.

Terrafibre Hemp Grow Mats, 10" x 20" – 10 Count Microgreens Supplies

Terrafibre Hemp Grow Mats, 10" x 20" – 10 Count

Microgreens Accessory

Microgreens media made from a renewable resource.

Bioset Germinator Seed Starting Supplies

Bioset Germinator

Grow fresh sprouts for salads right in your kitchen.

SureRoots 50-Cell Deep Plug Flats – 5 Count Cell Flats

SureRoots 50-Cell Deep Plug Flats – 5 Count

Promotes deeper root development.

Pro-Tray 38 Cell Flats – 5 Count Cell Flats

Pro-Tray 38 Cell Flats – 5 Count

For home and market gardeners. Round cells.

Fort Vee All-Purpose Potting Mix – 45 Qt Growing Media

Fort Vee All-Purpose Potting Mix – 45 Qt

A popular mix for the professional grower.

20 Cell Fertil Pots Strip – 10 Count Biodegradable Pots

20 Cell Fertil Pots Strip – 10 Count

100% organic, OMRI Listed® biodegradable pots.

Top-Grafting Clips with Channel – 1.5 mm Grafting Supplies

Top-Grafting Clips with Channel – 1.5 mm

Protect and support newly grafted plant stems to aid in healing.

128 Cell Plug Flats – 50 Count Cell Flats

128 Cell Plug Flats – 50 Count

Designed for fresh market growers. Square cells.

Widger Seed Starting Supplies

Widger

A great multipurpose tool for seed starting.

2 1/3" Round Fertil Pots – 160 Count Biodegradable Pots

2 1/3" Round Fertil Pots – 160 Count

100% organic, OMRI Listed® biodegradable pots.