Seed Starting Supplies
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.
249 Products
Sort By:
Sort By:
Power Cord with On/Off Switch
LED or T5HO Strip Light Accessory
Design your own custom seedling growing space.
Standard Dibbles
Soil Blocker Accessory
Use with soil blockers to create dibbled holes for smaller seeds.
Heat Mat Temperature Controller
Johnny's Heat Mat Accessory
For consistent temperature control with heat mats.
Grafting Support Stakes
Top-Grafting Clips with Channel Accessory
Secure plants in place for proper graft healing.
Hanging Clips
LED or T5HO Strip Light Accessory
Ideal for suspending SunBlaster lighting above your growing area.
Hang It Adjustable Hanger
LED or T5HO Strip Light Accessory
Quickly adjust the height of lighting as plants grow.
Long Dibbles
Soil Blocker Accessory
Use with soil blockers to create dibbled holes for seeds or cuttings.
Strip Light Hanger
LED or T5HO Strip Light Accessory
Expand your lighting to grow bigger, healthier plants.
Paperpot Seedling Trays – 10 Count
Paperpot Transplanter Accessory
Tray sized specifically for Paper Chain Pots.
NanoDome – Single
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
NanoDome – 5 Count
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
Soil Block Propagation Trays – 50 Count
These wide-mesh bottom trays are ideal for soil block propagation.
8 and 16-Tray Light Cart Replacement LED Tube – 48", 1 Count
Replacement tube for #6221 and #6248 light carts.
Paperpot Seedling Tray – Individual
Paperpot Transplanter Accessory
Tray sized specifically for Paper Chain Pots.
NanoDome – 25 Count
LED or T5HO Strip Light Accessory
Humidity dome with groove for resting a grow light.
Connector Set
Johnny's Modular LED Grow Light Cart Accessory
Locks two Johnny's Modular LED Grow Light Carts together.
Link Cord – 24"
LED or T5HO Strip Light Accessory
Add on to your strip lights for more growing space.
Link Cord – 14"
LED or T5HO Strip Light Accessory
Add on to your strip lights for more growing space.
