Item Number: GP964
Seedling Heating Mats - Thermostat
Regulate and Maintain Optimum Temperature
Consistent warmth at the root zone can make all the difference for seed germination, and this seedling heating mat with thermostat delivers gentle, even heat to encourage strong early growth. Designed to raise the root area temperature to the optimal range for many crops, it helps speed germination and improves success rates for vegetables, herbs, flowers, and other plants, especially in cooler growing environments.
Adding a thermostat to your Seedling Heating Mat allows you to regulate and maintain optimum growing temperatures.
- Provides constant temperature by adjusting heat levels as the ambient air and your soil temperature changes.
- Invaluable if your mat lacks temperature control capabilities.
- Digital display, 3-prong ground plug.
- Compatible with all heat mats.
- Temperature range 68-108°F, precise to +/-2°F.
The mat’s durable, waterproof design and insulated wiring provide safety and long-lasting performance, making it ideal for greenhouses, propagation areas, and indoor garden setups. With the thermostat ensuring precise control, you can cater to the unique needs of heat-loving crops or maintain steady temperatures for more delicate seedlings. Beyond seed-starting, it can also be used for homebrewing projects or maintaining warm conditions in pet enclosures and terrariums.
Find more seed-starting and propagation tools in our Tools & Equipment collection.
- Temperature Range: 68–108°F (precise to +/-2°F)
- Control: Digital thermostat with adjustable settings
- Compatible With: All seedling heat mats
- Uses: Seed germination, homebrewing, pet enclosures
Check Your Zone Compatibility:
Compatible with your zone.
Growing Zone for

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Shipping Information
Shipping Information
Shipping Weight: 1.3 lb
Dimensions: 10.25"L x 3.0"W x 6.5"H
Features
Features
- Use for Seed Starting
Characteristics
Characteristics
Use Instructions
Use Instructions
Useful Information
Useful Information
Guarantee
Guarantee
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This Jump Start Heating mat works great and is long lasting. We connected four commercial mats to it, worked it hard, and it lasted years.
I got this to use with a double mat. It will work on others as well. I was able to control temps in my trays very nicely. I checked with an insta-read thermometer and it was within a degree of my setting. I had it set at 76 degrees in a room that's 62 degrees. I also had two single size mats going without thermostat and they got 90 degrees which was warmer than I wanted. The product isn't to hard to setup either, which is nice.
These are great for using in a greenhouse or other locations where you want the soil to stay a certain temperature and not get too hot - indoors I use the always on mats without a thermostat, but in a greenhouse that can get very hot during the day but cold at night, I only want the heat mat on when the soil is cooling off, otherwise seeds and seedlings get cooked.
power saver