Gro-Mat


Availability: ** IN STOCK **
Departs: In 1-2 business days from our IL or CA warehouse.




Product Details

Description

Gro-mat brand electric seedling mats produce a uniform radiant heat for quick propagation of your seedlings. Integrated metal rack holds your tray slightly above the mat to provide a gentle, even heat that will not dry out your plants as quickly as other mats.

How It Works

Gro-mat has been pre-tested and set to the correct temperature for use. The mat and rack have been designed together so warmth travels upward through the open space between the flat and the mat, and circulates into and through soil.

Temperature

Gro-mat contains an electric heating element that produces uniform radiant heat. It is themostatically controlled so that the heat will be maintained at a constant temperature. The heating element is molded within the rubber to eliminate the danger of fire or electrical shock (As with any new heated rubber product, the rubber odor may be quite noticeable when plugged in the first time. This is temporary, and will dissipate quickly.

Placement

Use Grow-mat in an area that is not affected by another heat source - avoid placement near a washer, dryer, television, or heater. Keep the mat out of sunlight that comes through windows in morning or afternoon. While light is good in helping seedlings from getting too leggy, you must be careful of the heat effect.

Take care as to what type of surface you place the mat on = some delicate surfaces can discolor or crack from the heat. If you are not sure about the surface, place some cardboard under the mat for insulation.

Moisture

Take care to keep the soil moist and watch the flats closely in the beginning - the added heat causes the soil to dry out faster.


Shipping Standard Ground Service

This product ships via Standard Ground Service.


Product Q&A

Ask a Question

Q
What are your dimensions of the gro-mat?
A
You can choose between the 21" x 15 1/4" mat or the 38" x 17" mat.

Q
The description says "pre-tested and set to the correct temperature for use". What temperature is that? F degrees please.
A
The Gro-Mat has a maintained operational temperature of approximately 130 degrees F.

Q
Can the "thermostat for seedlings" you sell on this site be used with this mat? Also how many watts are each mat?
A
The Thermostat for Seedling Mat (PR-HMT-500) is compatible with all heat mats. The wattage for the GM-1 Gro-Mat is 90 watts and the wattage for the GM-2 is 135 watts.

Q
Are mats waterproof?
A
The Gro-Mat is moisture resistant, but should not be immersed in water since it contains an electrical current.

Q
Does this item need a heat mat thermostat?
A
A thermostat is not needed for use, however, one can be used with the Gro-Mat if you would like to have more control over the temperatures that the mat is producing.

Q
How many 1020 trays can fit the different sizes of gro mats? The sizes don't seem to be synchronized, so if they are not, which trays should be used?
A
The GM-1 Gro-Mat will accommodate a single 1020 Tray while the GM-2 Gro-Mat can accommodate three 1020 Trays.

Q
Can these be used in a greenhouse to start seeds in cooler temps?
A
Our master gardener stated that the Gro-Mat should be able to be used in this application.

Q
How many watts of electricity does it consume?
A
The Gro-Mat GM-1 will use 90 watts while the Gro-Mat GM-2 will use 135 watts.

Q
How many AMPS does the smaller grow matt draw? I have a solar system and need to calculate how many matts my system can support at a time.
A
The 21"L x 15-1/4'W Gro-Mat will draw 0.8 AMPS.

Q
How long do these mats last? When should I expect to replace them? Assume I use them daily.
A
The overall lifespan will depend on the growing environment that the product is being used in, however, the Gro-Mat does have a 1 year manufacturers default warranty.

Q
What are the dimensions of the frame? I want to see if it will fit in an existing cold frame I use.
A
The frame for the GM-1 Gro-Mat measures 22.25" x 15.25" x 2". Unfortunately, the manufacturer has not currently provided the frame dimensions for the GM-2 Gro-Mat.

Q
Will this mat operate from a 110v electricity source?
A
The Gro-Mat should be able to be used with the standard 110/120v electrical outlet.


Product Reviews 

  Based on 17 reviews for Gro-Mat


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Love these
Dec 13, 2017  |  By
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So far these have really sped up my growing garden plants from seeds. I would recommend these to anyone wanting to save on the cost of garden plants by starting their own.

Large Gro-Mat
Apr 19, 2017  |  By
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I haven't seen another product that even comes close to the quality and dependability of Grow-Mat!

Carla in Montana
Apr 13, 2017  |  By
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Love them, I have 3 and they work great. No thermostat to worry about.

FABULOUS MAT
Apr 26, 2016  |  By
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I have had several of these mats and one finally gave out and so just ordered another. I love them. The heat is constituent and I am able to start my plants with the constant heat I am looking for. Thanks!!

Large Grow Mat
Mar 16, 2016  |  By
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Excellent product that fully met my expectations. I would definitely buy again. I have a separate settable temp monitor, so the one that's part of the heat mat is not really used for me. Great product.

Grow Mats
Mar 2, 2014  |  By
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Although haven't used these grow mats to the fullest potential, our findings so far are very good. Granddaughter has a science project about seeds and her beans srouted in 2 days and after 1 1/2 weeks they are 14" tall

?
Jan 18, 2014  |  By
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I have used these items this week. They are working well.

Very Pleased!
Apr 1, 2013  |  By
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So pleased with my grow mat. My seeds seem to love it, too! Attention to my order was prompt and I received it earlier than I anticipated. Thanks for a good well done.

Georgia Master Gardener
Mar 25, 2013  |  By
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This is my first time using a heated gro-mat and thus far it has proved to be very satisfactory. It is wide enough for three 72 cell starter trays. After the initial break in period of about a week ,which has a burnt rubber smell, the mats are oderless now.The constant temperate generated keeps the soil at 70 degrees or more and germination of my tomatoe seeds have taken about 4-5 days I feel safe using this product in my home and would recommend it to fellow gardeners.

cool gro mat
Mar 25, 2013  |  By
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I'm a novice at starting seeds at home, so after much research I chose this gro mat. I really liked that the mat had a grate for airflow under my trays. I think it helped even out the temperature with no hot spots. I would recommend this for the novice and on up.

Mr.
Mar 16, 2013  |  By
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Excellent product, really helps with seed germ and rooting hardwood cuttings

Gro-Mat
Feb 16, 2013  |  By
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Grow mat works as advertised. My tomatoes germinated in just three days. Best ever, a must for every gardner who starts from seeds.

Gro-Mat
Apr 22, 2011  |  By
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Keeps constant heat. Large enough for 72 small peat discs. Has a small enough footprint to be at the end of my table.

Gro Mat
Nov 28, 2010  |  By
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Started out with one Gro Mat for hibiscus seeds and now have 3 Gro Mats for the seeds that sprouted and are now 6 inch tall plants enjoying the bottom heat

Forgot to Mention !
Nov 21, 2010  |  By
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My Gro-Mat was the best price I could find also. I did my homework and the price was well below many of the other Greenhouse Supply Stores. Thanks Again Fawn

GROW ! Grow GROW!
Nov 21, 2010  |  By
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This GRO-MAT is AWESOME. I already see new growth on my cyclamen. It just needed the proper heat. I am anxious to start my seeds on it after Christmas! Thank You Greenhouse Megastore! :)

Gro-Mats do the job!
Jan 28, 2010  |  By
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I now own 4 of these gro-mats. I use them to start Lotus and Dahlias inside as we have a short summer in Minnesota. The only complaint I have is the rubber will smell when new and takes some time to finally mellow out! Otherwise these do a great job of heating pots and flats!

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