Heat Mat

Seed Starting Heat Mat - Small or Large*

The most common reason seeds don't sprout indoors is because the soil is to cool. Sow seeds, place tray on heat mat, leave there until 50% of seeds begin to sprout. Then move to 16 hours of light a day until moved outdoors.

• Seed starting heat mat has a built-in thermostat that maintains soil temperature 15-20 degrees above room temperature.
• Warm soil leads to more seeds germinating and more quickly.
• Grows bigger, healthier plants.
• Small mat can support 3 trays (from 120-180 small blocks), 9” x 19”.
• Large mat can support 640 small blocks, 20” x 48”.

Here is what customers are saying about how soil blocking has changed their seed starting experience.

Click here for more soil blocking tips and videos.

*Additional shipping details:
Zone 1-2 $ 7.71, zone 3 $ 8.20, zone 4 $8.81, zone 5 $10.03, zone 6 $13.75, zone 7 $15.59, zone 8 $17.61
Find your shipping zone and read our shipping policy here.