Speed up Seedlings with Heat Mats

December 25, 2018

If you are growing warm-season crops—such as basil, tomatoes, or peppers—from seed indoors during cold winter months, you must warm their soil. Ultimately, your goal is to get as many seeds to germinate as quickly as possible. For crops that need warmer soil temperatures, especially when you’re starting them indoors during colder months, a seedling heat mat can speed up the germination process and ensure success.

A heat mat warming up the soil for new seedlings.

A heat mat warming up the soil for new seedlings.
PC: Leslie F. Halleck

Heat mats, which are placed directly under your seed tray, can warm soil to an average of 15 to 20 degrees Fahrenheit above room temperature. Be sure to use a heat mat specifically designed for seed germination. Seedling heat mats are insulated and moisture-resistant, so you can place them on normal surfaces under your seed trays.

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