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