Hydrofarm Propagation Mat — 12" x 48", 60W Bottom-Heat Mat

Even Bottom Heat for Faster, More Uniform Seed Germination, 12in x 48in

Cool root zones slow germination and clone rooting, leaving trays of inconsistent starts and wasted bench space during the propagation window. Hydrofarm's Propagation Mat sits beneath trays and warms the rooting area 10-20°F above ambient temperature, giving seeds and cuttings the steady root-zone warmth they need to establish faster and more evenly.

At 12in x 48in, the mat runs two standard trays end-to-end and fits cleanly under 4-foot fluorescent fixtures, slotting directly into existing seedling and cloning setups.

Key Features & Benefits

• 12in x 48in Heated Surface — covers two standard 10in x 20in trays end-to-end and heats the entire tray bottom evenly, rather than leaving cold spots at the edges.
• Warms Root Zone 10-20°F Above Ambient — creates the steady bottom heat that markedly improves germination and rooting success compared with unheated trays.
• Daisy-Chainable Up to 10 Mats — lets growers run a full bench of mats from a single outlet, cutting down on power strips and outlet competition.
• Waterproof Construction — stands up to the splashes and humidity that come with regular watering and misting in a propagation area.
• 6-Foot Power Cord — reaches standard wall outlets or power strips without extension cords crowding the bench.

Who Should Use the Hydrofarm Propagation Mat

This mat suits home growers starting seeds or rooting cuttings, hobby greenhouse operators, and small commercial propagation setups that need reliable, even bottom heat across multiple trays, including anyone running a dedicated cloning station or seedling rack.

About Hydrofarm

Hydrofarm has supplied controlled-environment agriculture equipment since 1977, when founder Stuart Dvorin started the company as Applied Hydroponics in Marin County, California; the company has been based in Petaluma, California since 1994 and distributes thousands of items including grow lights, propagation equipment, and growing media.

Frequently Asked Questions

How much warmer will my trays get with this mat?

The mat raises the root zone roughly 10-20°F above the surrounding ambient temperature. The exact increase depends on room temperature, tray material, and growing medium, so pairing it with a thermostat controller gives the most predictable results.

How many mats can I run from one outlet?

Up to 10 of these mats can be daisy-chained together and run from a single outlet. That helps growers scale up a propagation bench without adding more power strips or competing for outlets.

Will the mat hold up to regular watering and humidity?

Yes — it's built with waterproof construction for propagation environments, where misting, watering, and high humidity are part of the daily routine. That construction is what keeps the heating element safe under repeated splashes near the growing medium.

What size trays does this mat fit?

At 12in x 48in, the mat holds two standard 10in x 20in trays placed end-to-end. Its width also matches the footprint of common 4-foot fluorescent grow light fixtures, so it slots under an existing light setup without rework.

Do I need a separate thermostat to control the temperature?

The mat runs at a fixed output on its own, so growers who want to dial in a specific root-zone temperature rather than rely on the general 10-20°F lift typically pair it with a separate thermostat controller. That controller is sold separately and isn't required for basic use.