Seedling Heating Mat (Four Flat Size)

The Four Flat Seedling Heating Mat delivers gentle, even warmth at the root zone to speed germination and boost success rates. It raises root-area temperature 10 to 20°F above ambient, helping vegetables, herbs, and flowers get started in cooler conditions. Insulated internal wiring, heavy-duty multi-layer construction, and a waterproof surface make it safe for greenhouses, propagation areas, and indoor setups.

At a glance

• Size: 48 by 20 inches (four flat capacity)
• Power: 100W
• Cord length: 5.90 ft
• Temperature increase: 10 to 20°F above ambient
• Surface: Waterproof, heavy-duty multi-layer build
• Uses: Seed germination, homebrewing, pet enclosures

Best for

• Starting multiple seed trays at once
• Improving germination in cool rooms or greenhouses
• Warming heat-loving crops like peppers and tomatoes
• Homebrewing fermentation warmth
• Reptile, rodent, and terrarium enclosures

How to use

Place the mat on a flat, stable surface and set your seed trays on top. Plug it in to maintain a steady root-zone temperature 10 to 20°F above the room. Keep the waterproof surface wiped clean, and use a thermostat if you need to hold a precise target temperature.

About Grow Organic

Grow Organic supplies seeds, tools, and natural growing products for home gardeners and small farms, with a focus on organic and earth-friendly solutions.

Sold by Grow Organic, based in Grass Valley, California.