My window-only seedlings were always leggy and weak before I tried SproutGlow. Now I get robust, stocky roots and I'm starting my tomatoes about a month earlier than I used to.
Melissa H.Verified Buyer
SproutGlow ™
Regular price
$99.00
Regular price
$99.00
Sale price
$198.00
Unit price
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Compact Coop Thermometer & Hygrometer
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How It Works
How It Works
- 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.
What's Included
What's Included
- 1 x SproutGlow Plant Heating Mat
- 1 x Printed Germination & Care Guide
- 1 x Retail Packaging Box
Shipping & Returns
Shipping & Returns
We offer free shipping for all orders. Once your item/s is dispatched,
the estimated delivery time is:
- USA: 2-9 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days
You have 90 days to return your product for a full refund (return shipping is covered by the customer; defective items ship a free replacement).
Official Authorized Retailer
This product is not available on Amazon or eBay. You are purchasing directly from the only authorized seller — which means full warranty, verified authenticity, and dedicated customer support. Beware of counterfeit listings on third-party marketplaces.
SproutGlow
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Why Gardeners Choose SproutGlow
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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.
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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.
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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.
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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.
What our 17,000+ Customers say
Based On Real and Honest Experiences
I went through two cheap mats that both died within a season before switching to SproutGlow. It's noticeably thicker and sturdier, and it's still holding up strong through my second full growing season.
Derek P.Verified Buyer
What I love most about SproutGlow is how consistent and evenly distributed the warmth is across the whole mat. It's been perfect for rooting my pothos cuttings, and it even sped things up for my stubborn hoya.
Priya S.Verified Buyer
Frequently Asked Questions
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+347 experts reviewed it
as the best choice in 2026
+347 experts reviewed it
as the best choice in 2026
Q1 Do I need a separate thermostat to use SproutGlow?
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.
Q2 Can I use SproutGlow in a cold basement or garage?
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.
Q3 Is SproutGlow safe to run indoors around the clock?
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.
Q4 Is SproutGlow waterproof? Can I water my trays while they're on it?
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.
Q5 Will SproutGlow work for plant cuttings and propagation, not just seeds?
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.
Q6 Does it use a lot of electricity?
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.
Q7 When should I take my seedlings off the heat mat?
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.
Q8 Why doesn't SproutGlow feel very hot when I touch it?
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.
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4.8/5 by 17,000+ customers
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Reviewed Top 1 in 2026