Tools & Supplies Seed Starting Supplies Seedling Heat Mats
An overhead view of several heat mats laid out on greenhouse tables.
Seedling Heat Mats
Heat mats can both increase germination rates and help you achieve more uniform germination by giving you control over temperature — one of the environmental factors most closely linked with germination. They also decrease production time by maintaining optimal root-zone temperature, thereby increasing growth rates in the early stages of a plant's life cycle. Johnny's offers heat mats in a range of sizes, from small to large add-on commercial styles, as well as thermostats and control devices for precise circadian regulation of bottom temperatures.
Filters
1 - 13 of 13
Done
Sale
Jump Start® Seedling Heat Mat – 9" x 19 1/2", 17 Watts Seedling Heat Mats
Warms seed flats for improved germination.
Warms seed flats for improved germination.
Sale
Hydrofarm Single Outlet Thermostat Seedling Heat Mats
Consistent temperature control at the root zone.
Consistent temperature control at the root zone.
Sale
Jump Start® Seedling Heat Mat – 20" x 48", 107 Watts Seedling Heat Mats
20" x 48" waterproof mat warms soil for optimum germination.
20" x 48" waterproof mat warms soil for optimum germination.
Sale
Add-on Heat Mat – 21" x 5', 180 Watts Seedling Heat Mats
Allows for daisy-chaining with Jump Start® Commercial Heat Mat.
Allows for daisy-chaining with Jump Start® Commercial Heat Mat.
Sale
Jump Start® Commercial Heat Mat – 21" x 5', 180 Watts Seedling Heat Mats
Stand-alone mat with 6 ft 120-volt AC power cord.
Stand-alone mat with 6 ft 120-volt AC power cord.
Sale
Jump Start® Seedling Heat Mat – 20" x 20", 45 Watts Seedling Heat Mats
20" x 20" waterproof mat warms soil for optimum germination.
20" x 20" waterproof mat warms soil for optimum germination.
Sale
Redi-Heat™ Four Outlet Digital Thermostat Seedling Heat Mats
Precise temperature control of up to four heat mats at once.
Precise temperature control of up to four heat mats at once.
Sale
Redi-Heat™ Heat Mat – 12" x 10', 300 Watts Seedling Heat Mats
12" x 10' heavy-duty heat mat for constant heat to root zone.
12" x 10' heavy-duty heat mat for constant heat to root zone.
Sale
Redi-Heat™ Heat Mat – 12" x 20', 600 Watts Seedling Heat Mats
12" x 20' heavy-duty heat mat for constant heat to root zone.
12" x 20' heavy-duty heat mat for constant heat to root zone.
Sale
Redi-Heat™ Bench Mounting Bracket Seedling Heat Mats
Holds thermostat above plant material on your seedling bench.
Holds thermostat above plant material on your seedling bench.
Sale
Redi-Heat™ Heat Mat – 21" x 5', 150 Watts Seedling Heat Mats
21" x 5' heavy-duty heat mat for constant heat to root zone.
Out of Stock
21" x 5' heavy-duty heat mat for constant heat to root zone.
Sale
Redi-Heat™ Heat Mat – 21" x 10', 300 Watts Seedling Heat Mats
21" x 10' heavy-duty heat mat for constant heat to root zone.
Out of Stock
21" x 10' heavy-duty heat mat for constant heat to root zone.
Sale
Redi-Heat™ Heat Mat – 12" x 5', 150 Watts Seedling Heat Mats
12" x 5' heavy-duty heat mat for constant heat to root zone.
Out of Stock
12" x 5' heavy-duty heat mat for constant heat to root zone.
1 - 13 of 13