VIVOSUN Seedling Heat Mat 10×20
by VIVOSUN
VIVOSUN's 10"×20.75" seedling heat mat is the standard size to fit a 72-cell or 1020 seedling tray, maintaining substrate temperature 10–20°F above ambient room temperature to accelerate germination and root development. The UL and MET-certified waterproof PVC construction is designed to be wet-work safe, and the advanced far-infrared heating element distributes heat evenly across the entire mat surface without hot spots. Germination rates for warm-season crops like tomatoes, peppers, and basil increase significantly with bottom heat in the 75–85°F range this mat provides.
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What We Love
- Raises soil temperature 10–20°F above ambient — critical for warm-season seed germination
- Standard 10×20" size fits all 1020 seedling trays
- UL and MET certified for electrical safety
- Waterproof PVC construction safe for wet growing environments
- Even heat distribution without hot spots
Worth Knowing
- No built-in thermostat — add a separate thermostat controller for precise temperature control
- Always-on design at 17–20W adds to electricity costs over long germination periods
"A seedling heat mat is one of the most impactful tools for improving germination rates for warm-season crops — the difference between 68°F and 80°F soil temperature can mean germination in 5 days versus 14 days for tomatoes and peppers. VIVOSUN's mat is the affordable standard with solid UL certification. Pair it with a separate thermostat controller (sold separately for ~$20) for precise control and to prevent overheating delicate seedlings."
