I purchased the 48" x 20" mat: MET certified Seedling Heat Mat, Seedfactor Waterproof Durable Germination Station Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening Seed Starter(48" x 20"). It arrived quickly and in excellent condition. As expected, the mat was rolled up for packaging - it flattened out nicely after I let it heat itself up for about an hour.
I have various varieties of tomato and pepper seeds that I've started in 4" square pots in my basement (plus a bunch of bare-root strawberries that the nursery decided to ship on April 2nd ... to Colorado ... where the general guideline for putting plants outdoors is Mother's Day).
The pots are sitting in plastic food service trays, 10 or 12 pots per tray, on a plastic table. The ambient temp in that part of the basement varies between about 65°F and 70°F, so the soil temp sits around 67°F. Way too cold for those seeds to germinate reliably.
I put the mat between the table and the trays, then plugged it into a thermostat (VIVOSUN Digital Seedling Heat Mat Thermostat Controller 68-108℉). I set the thermostat to 80°F. Its probe indicated an initial soil temp of 67°F. Even through the trays and with the low ambient and starting soil temps, the mat raised the soil temp to 80°F in about 4 hours. The thermostat is cycling on/off as soil temp moves between 80° and 81°F, drawing the expected 100W when it's on. Of course, there's a substantial soil temp hit (and re-heat time) when I water the seedlings - I should probably use warmer water.
I did not insulate the mat from the table, so there's some heat loss there - I can feel it on the underside of the table. I suspect performance might be a little better if I put some cardboard and/or styrofoam between the mat and the table.
So far, I'm completely satisfied with this product.
UPDATE 21 APR 2018:
I tried increasing the target soil temp to 82°F via the thermostat. With ambient temp in the basement dropping down to 60°F overnight during a few days of cold weather, the mat was unable to keep up. It was on 100% of the time and couldn't get the soil even to 80°F. This was not unexpected, as the product description says it "warms root area 10-20°F over ambient temperature".
I put some 1" styrofoam (packaging from some assemble-it-yourself furniture) between the mat and the table. The mat is now able to quickly raise the soil temp to 83°F while only on about 70% of the time. (Average duty cycle calculated from total kWh used, total hours elapsed, and 100W).
I may also replace the plastic food service trays with aluminum half-sheet pans for better heat transfer between the mat and the pots.
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From the brand
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Our goal at SeedFactor is simple: we want you and your plants to thrive. Our products aim to cover all your home gardening needs, and do so at a realistic value point. No matter what type of gardening experience you have, our products will make a green thumb out of you in no time. Happy planting!
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Seedfactor
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Seedfactor
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Seedfactor
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Seedfactor
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Seedfactor
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Seedfactor
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Seedfactor
From the manufacturer
Seedfactor
Our goal at SeedFactor is simple: we want you and your plants to thrive. Our products aim to cover all your home gardening needs, and do so at a realistic price point. No matter what type of gardening experience you have, our products will make a green thumb out of you in no time. Happy planting!
The Seed Heat Mat
SeedFactor
Patience is good and all, but sometimes you just want your seeds to grow without any fuss. Enter SeedFactor’s Heat Mat. The Heat Mat accelerates seed germination by regulating the soil temperature to 70 to 85℉. This creates an ideal atmosphere for quick, healthy sprouting and rooting. The Heat Mat and its heavy-duty power cord are also fully waterproof, so you don’t need to worry about any messes or spills. Coming in three convenient sizes, this heat mat is the durable and reliable help you need to get your garden growing.
- Fully waterproof cord and mat
- Regulates soil temperature for optimal growth
- Comes in three sizes
- MET safety certified
Temperature Regulated
Totally Waterproof
MET Safety Certification
Simple to Use
Compare with similar items
This Item  Seedfactor MET Certified Seedling Heat Mat, Waterproof Durable Germination Station Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening Seed Starter(10" x 20") | Recommendations  |  |  |  |  | |
| Price | -21% $10.99 List: $13.99 | $17.99 | -27% $21.99 List: $29.99 | -20% $11.99 Typical: $14.99 | -17% $18.99 List: $22.99 | $56.99 |
| Delivery | Get it as soon as Wednesday, Mar 26 | Get it as soon as Wednesday, Mar 26 | Get it as soon as Wednesday, Mar 26 | Get it as soon as Wednesday, Mar 26 | Get it as soon as Wednesday, Mar 26 | Get it as soon as Wednesday, Mar 26 |
| Customer Ratings | ||||||
| Sold By | Mumba Store | Mumba Store | BN-LINK | VIVOSUN | NAMOTEK-US | VIVOSUN |
| type | — | — | Vegetable | Herb | — | Herb |
| number of pieces | 1 | 64 | 2 | — | 2 | 4 |
| blooming period | Summer | Summer | Spring | Summer | — | Summer |
Seems to work perfectly. Quickly raised soil temp from 67°F to 80°F and maintains it.
I purchased the 48" x 20" mat: MET certified Seedling Heat Mat, Seedfactor Waterproof Durable Germination Station Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening Seed Starter(48" x 20"). It arrived quickly and in excellent condition. As expected, the mat was rolled up for packaging - it flattened out nicely after I let it heat itself up for about an hour.I have various varieties of tomato and pepper seeds that I've started in 4" square pots in my basement (plus a bunch of bare-root strawberries that the nursery decided to ship on April 2nd ... to Colorado ... where the general guideline for putting plants outdoors is Mother's Day).The pots are sitting in plastic food service trays, 10 or 12 pots per tray, on a plastic table. The ambient temp in that part of the basement varies between about 65°F and 70°F, so the soil temp sits around 67°F. Way too cold for those seeds to germinate reliably.I put the mat between the table and the trays, then plugged it into a thermostat (VIVOSUN Digital Seedling Heat Mat Thermostat Controller 68-108℉). I set the thermostat to 80°F. Its probe indicated an initial soil temp of 67°F. Even through the trays and with the low ambient and starting soil temps, the mat raised the soil temp to 80°F in about 4 hours. The thermostat is cycling on/off as soil temp moves between 80° and 81°F, drawing the expected 100W when it's on. Of course, there's a substantial soil temp hit (and re-heat time) when I water the seedlings - I should probably use warmer water.I did not insulate the mat from the table, so there's some heat loss there - I can feel it on the underside of the table. I suspect performance might be a little better if I put some cardboard and/or styrofoam between the mat and the table.So far, I'm completely satisfied with this product.UPDATE 21 APR 2018:I tried increasing the target soil temp to 82°F via the thermostat. With ambient temp in the basement dropping down to 60°F overnight during a few days of cold weather, the mat was unable to keep up. It was on 100% of the time and couldn't get the soil even to 80°F. This was not unexpected, as the product description says it "warms root area 10-20°F over ambient temperature".I put some 1" styrofoam (packaging from some assemble-it-yourself furniture) between the mat and the table. The mat is now able to quickly raise the soil temp to 83°F while only on about 70% of the time. (Average duty cycle calculated from total kWh used, total hours elapsed, and 100W).I may also replace the plastic food service trays with aluminum half-sheet pans for better heat transfer between the mat and the pots.
Top reviews from the United States
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- Reviewed in the United States on April 18, 2018Size: 1 Pack-48" X 20"Verified Purchase
I purchased the 48" x 20" mat: MET certified Seedling Heat Mat, Seedfactor Waterproof Durable Germination Station Heat Mat, Warm Hydroponic Heating Pad for Indoor Home Gardening Seed Starter(48" x 20"). It arrived quickly and in excellent condition. As expected, the mat was rolled up for packaging - it flattened out nicely after I let it heat itself up for about an hour.
Seems to work perfectly. Quickly raised soil temp from 67°F to 80°F and maintains it.
Reviewed in the United States on April 18, 2018
I have various varieties of tomato and pepper seeds that I've started in 4" square pots in my basement (plus a bunch of bare-root strawberries that the nursery decided to ship on April 2nd ... to Colorado ... where the general guideline for putting plants outdoors is Mother's Day).
The pots are sitting in plastic food service trays, 10 or 12 pots per tray, on a plastic table. The ambient temp in that part of the basement varies between about 65°F and 70°F, so the soil temp sits around 67°F. Way too cold for those seeds to germinate reliably.
I put the mat between the table and the trays, then plugged it into a thermostat (VIVOSUN Digital Seedling Heat Mat Thermostat Controller 68-108℉). I set the thermostat to 80°F. Its probe indicated an initial soil temp of 67°F. Even through the trays and with the low ambient and starting soil temps, the mat raised the soil temp to 80°F in about 4 hours. The thermostat is cycling on/off as soil temp moves between 80° and 81°F, drawing the expected 100W when it's on. Of course, there's a substantial soil temp hit (and re-heat time) when I water the seedlings - I should probably use warmer water.
I did not insulate the mat from the table, so there's some heat loss there - I can feel it on the underside of the table. I suspect performance might be a little better if I put some cardboard and/or styrofoam between the mat and the table.
So far, I'm completely satisfied with this product.
UPDATE 21 APR 2018:
I tried increasing the target soil temp to 82°F via the thermostat. With ambient temp in the basement dropping down to 60°F overnight during a few days of cold weather, the mat was unable to keep up. It was on 100% of the time and couldn't get the soil even to 80°F. This was not unexpected, as the product description says it "warms root area 10-20°F over ambient temperature".
I put some 1" styrofoam (packaging from some assemble-it-yourself furniture) between the mat and the table. The mat is now able to quickly raise the soil temp to 83°F while only on about 70% of the time. (Average duty cycle calculated from total kWh used, total hours elapsed, and 100W).
I may also replace the plastic food service trays with aluminum half-sheet pans for better heat transfer between the mat and the pots.
Images in this review
- Reviewed in the United States on April 16, 2024Size: 1 Pack-10" X 20"Verified Purchase
Arrived as expected, works perfectly as advertised to support growth of seedlings. There is only one temperature - no temp adjustment feature but since I am a beginner, I did not require temperature adjustment or control. This seedling heating mat stays at the constant temperature that supports growth. It is waterproof as there were no issues with misting the seedlings. I am satisfied with the performance of this product and recommend it. Be advised that your pets may move in!
Images in this review
Top reviews from other countries
- Rahul ThakurReviewed in India on August 7, 2023
Works at 110V
Size: 1 Pack-10" X 20"Verified Purchase - MiriamReviewed in Canada on August 22, 2019
Helps to keep my kombucha warm
Size: 1 Pack-10" X 20"Verified Purchase - jennell castilloReviewed in Canada on September 24, 2018
Helpful for plant growing
Size: 1 Pack-10" X 20"Verified Purchase
