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.
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Warms seed flats for improved germination.
Warms seed flats for improved germination.
Consistent temperature control at the root zone.
Consistent temperature control at the root zone.
20" x 48" waterproof mat warms soil for optimum germination.
20" x 48" waterproof mat warms soil for optimum germination.
Allows for daisy-chaining with Jump Start® Commercial Heat Mat.
Allows for daisy-chaining with Jump Start® Commercial Heat Mat.
20" x 20" waterproof mat warms soil for optimum germination.
20" x 20" waterproof mat warms soil for optimum germination.
21" x 10' heavy-duty heat mat for constant heat to root zone.
21" x 10' heavy-duty heat mat for constant heat to root zone.
Stand-alone mat with 6 ft 120-volt AC power cord.
Stand-alone mat with 6 ft 120-volt AC power cord.
21" x 5' heavy-duty heat mat for constant heat to root zone.
21" x 5' heavy-duty heat mat for constant heat to root zone.
Precise temperature control of up to four heat mats at once.
Precise temperature control of up to four heat mats at once.
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.
12" x 5' heavy-duty heat mat for constant heat to root zone.
12" x 5' heavy-duty heat mat for constant heat to root zone.
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.
Holds thermostat above plant material on your seedling bench.
Holds thermostat above plant material on your seedling bench.
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