Seed Starting Supplies | Johnny's Selected Seeds

Skip to main content Skip to footer content

0

View Cart

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.

Satisfaction Guarantee

246 Products

Sort By:

Sale

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

3 1/8" Round Fertil Pots – 90 Count

100% organic, OMRI Listed® biodegradable pots.

Sale

Maxi Square Plastic Pots – 18 Count Plastic Pots

Maxi Square Plastic Pots – 18 Count

For larger seedlings like peppers and tomatoes.

Sale

Replacement Blades Seed Starting Supplies

Replacement Blades

Grafting Knife Accessory

For the 7172 Miter-Cut Grafting Knife.

Sale

4" Round Fertil Pots – 50 Count Biodegradable Pots

4" Round Fertil Pots – 50 Count

100% organic, OMRI Listed® biodegradable pots.

Sale

Heat Mat Temperature Controller Seedling Heat Mats

Heat Mat Temperature Controller

Johnny's Heat Mat Accessory

Must-have for consistent temperature control with heat mats.

Sale

Grafting Support Stakes Grafting Supplies

Grafting Support Stakes

Top-Grafting Clips with Channel Accessory

Secure plants in place for proper graft healing.

Sale

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

SureRoots® 50-Cell Deep Plug Flats – 5 Count

Promotes deeper root development.

Sale

Jumbo Plug Inserts – 5 Count Cell Flats

Jumbo Plug Inserts – 5 Count

Large cell flats can be separated into six-packs.

Sale

Widger Seed Starting Supplies

Widger

A great multipurpose tool for seed starting.

Sale

Long Dibbles Soil Blocking

Long Dibbles

Soil Blocker Accessory

Use with soil blockers to create dibbled holes for seeds or cuttings.

Sale

Microgreens Reservoir Tray Microgreens Supplies

Microgreens Reservoir Tray

Microgreens Accessory

Durable and reusable.

Sale

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.

Sale

Johnny's Commercial LED Light Cart – 16 Trays LED

Johnny's Commercial LED Light Cart – 16 Trays

Designed for commercial grower applications.

Sale

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.

Sale

Soil Blocking and Potting Tray Soil Blocking

Soil Blocking and Potting Tray

Our favorite for making perfect soil blocks.

Sale

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

Polypro 5x5 Insert Pots – Black, 8 Count

Resilient and reusable.

Sale

7" Clear Propagation Domes – 5 Count Humidity Domes

7" Clear Propagation Domes – 5 Count

Create the perfect healing chamber for grafted tomatoes.

Sale

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.