Cobalt Hollow
Cobalt Hollow
SproutGlow

SproutGlow™seedling heat mat

$99.00

  • Even heat, no cold spots, built to last
  • Faster germination even in cold rooms
  • Robust roots instead of leggy seedlings
  • Start seeds and root cuttings with one mat

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Compact Coop Thermometer & Hygrometer

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  • Set the mat on a flat, dry surface and plug it in, no dials or extra setup needed.
  • Place your seed trays, pots, or cutting containers directly on top.
  • Leave it running around the clock, even edge-to-edge heat speeds germination and builds stronger roots.
  • 1 x SproutGlow Plant Heating Mat
  • 1 x Printed Germination & Care Guide
  • 1 x Retail Packaging Box

We offer free shipping on orders over $150. Once your order is dispatched, the estimated delivery time is 5 to 12 business days depending on your location — tracking is emailed as soon as it ships.

Changed your mind? You can return your product within 90 days of delivery for a refund — see our Returns page for the full policy.

Why Gardeners Choose SproutGlow

Weatherproof, Built to Last

Multi-layer PVC resists spills and humidity without cracking like thin single-layer mats. Wipe it clean in seconds, ready for next season.

No Cold Spots, No Hot Spots

Silicon-insulated wiring spreads heat evenly, no hot spots or cold corners causing uneven sprouts. Every seed gets the same steady warmth.

SproutGlow

Low-Wattage Efficiency

Running at just 20 watts, SproutGlow delivers steady warmth without spiking your power bill, so you can leave it on all season without worry.

Safe for Kids, Pets, and Plants

Unlike a heating pad, this mat is built for damp conditions under trays, with no exposed coils. Pets, kids, and seedlings all stay safe.

Frequently Asked Questions

No separate thermostat is required. SproutGlow raises soil about 10 to 20°F above room temperature on its own, which is enough of a boost to speed germination for most seeds without extra gear to buy or set up.

Yes, that's one of the best places for it. SproutGlow adds 10 to 20°F of bottom heat right where seeds need it, which easily makes up for a chilly basement, garage, or unheated spare room.

Yes. It runs on just 20 watts through solid-state elements with no exposed coils, unlike a household heating pad, so it's built for safe, continuous use in occupied rooms, sheds, or grow tents.

Yes. The PVC surface is fully waterproof, so overhead watering and normal splashes won't damage it. Just wipe away standing water afterward and let the surface air dry before your next use.

Yes. The same gentle bottom heat that speeds up germination also encourages faster root development in cuttings, so many gardeners keep it running year-round for both seed trays and propagation stations.

Not at all. Operating at just 20 watts, SproutGlow costs only pennies a day to run, even when left on continuously through your entire growing cycle.

Once seeds sprout and true leaves appear, most growers move trays off SproutGlow, especially tomatoes, which can get tall and thin with too much bottom heat. Peppers and slower crops often benefit from staying on a few days longer.

That's normal and by design. SproutGlow is built to lift soil temperature gently, about 10 to 20°F above the room, not to feel like a stovetop. That steady, moderate warmth is what protects tender roots while still speeding up germination.

Seed trays, pots, and cutting containers sit directly on the mat. As a seedling heat mat, it is used for starting seeds and rooting cuttings, and it plugs in with no dials.

The SproutGlow plant heating mat ships with one printed germination and care guide and a retail packaging box. The mat has a multi-layer PVC surface and silicon-insulated wiring and draws 20 watts.
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Get SproutGlow at today's price with your free gift included — and a full 90 days to enjoy it.

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SproutGlow: A Seedling Heat Mat for Seed Trays and Cuttings

SproutGlow is a seedling heat mat for gardeners who start seeds indoors and root cuttings. As a plant heating mat, it sits flat under seed trays, pots, or cutting containers.

The multi-layer PVC surface wipes clean, and silicon-insulated wiring runs through the mat. It draws 20 watts and plugs straight in. Gardeners use this seed starting heat mat in basements, garages, sheds, and spare rooms, and as a seed germination heat mat on a bench.

Seed trays, pots, and cutting containers sit directly on the surface. The mat needs a flat, dry spot and an outlet, and it has no dials or extra setup.

  • 1 x SproutGlow plant heating mat
  • 1 x printed germination and care guide

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