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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244 Products

Deluxe Microgreens Seed Starter Kit Microgreens Supplies

Deluxe Microgreens Seed Starter Kit

Grow microgreens indoors year-round.

Bioset Germinator Kit Seed Starting Supplies

Bioset Germinator Kit

Experience a wide range of flavors.

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

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

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

Johnny's Commercial Heat Mat – Master Seedling Heat Mats

Johnny's Commercial Heat Mat – Master

Improved germination for heat-loving crops.

Seedling Grower Starter Kit Seed Starter Kits

Seedling Grower Starter Kit

Grow your own seedlings at home.

SunBlaster Growlight Garden Seed Starter Kits

SunBlaster Growlight Garden

Complete kit for growing a garden in your home.

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

SureRoots 50-Cell Deep Plug Flats – 25 Count

Promotes deeper root development.

35-Cell Stand-up Soil Blocker Soil Blocking

35-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

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

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

12-Cell Stand-up Soil Blocker Soil Blocking

12-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

Johnny's Seedling Heat Mat – 20.75" x 48" Seedling Heat Mats

Johnny's Seedling Heat Mat – 20.75" x 48"

Improved germination for heat-loving crops.

Lightweight Deep Trays – 100 Count Support Trays

Lightweight Deep Trays – 100 Count

The standard 1020 greenhouse flat without drainage slots.

Mini Square Plastic Pots – 540 Count Plastic Pots

Mini Square Plastic Pots – 540 Count

For big stocky transplants.

50 Cell Plug Flats – 100 Count Cell Flats

50 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.

6-Cell Stand-up Soil Blocker Soil Blocking

6-Cell Stand-up Soil Blocker

Create soil blocks for seeding and transplanting.

Heavyweight Mesh Tray – 50 Count Support Trays

Heavyweight Mesh Tray – 50 Count

Heavy duty support for other seedling containers.

200 Cell Plug Flats – 50 Count Cell Flats

200 Cell Plug Flats – 50 Count

Designed for fresh market growers. Square cells.

7" Clear Propagation Domes – 25 Count Humidity Domes

7" Clear Propagation Domes – 25 Count

Create the perfect healing chamber for grafted tomatoes.