2014 Home, Kitchen & Garden Gift Guide
Qty:1
$21.94 + Free Shipping
In Stock. Sold by Hydroponics Nation

Image Unavailable

Image not available for
Color:
  • Growers Supply Company GSHM 9-by-19-1/2-Inch Small Seedling Heat Mat (Discontinued by Manufacturer)
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

Growers Supply Company GSHM 9-by-19-1/2-Inch Small Seedling Heat Mat (Discontinued by Manufacturer)


List Price: $33.28
Price: $21.94 & FREE Shipping
You Save: $11.34 (34%)
In Stock.
Ships from and sold by Hydroponics Nation.
Small
  • 9-Inch by 19-1/2-Inch
  • Warms root area 10-20-degree F over ambient temperature to improve germination
  • Increases the success of seedlings and cuttings
  • Waterproof construction
  • Place a combination of different trays or pots on the mat
This item’s packaging will be visible when delivered and cannot be gift-wrapped.

Miracle-Gro AeroGardens
Grow your own plants and herbs 5 times faster than in soil. See Miracle-Gro's full selection of soil-free indoor gardens.

Frequently Bought Together

Growers Supply Company GSHM 9-by-19-1/2-Inch Small Seedling Heat Mat (Discontinued by Manufacturer) + Hydrofarm MTPRTC Digital Thermostat for Heat Mats
Price for both: $54.36

These items are shipped from and sold by different sellers.

Buy the selected items together

Product Details

Size: Small
  • Product Dimensions: 19.5 x 9 x 0.2 inches ; 11.2 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • Origin: USA
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B002LVU4Y8
  • Item model number: GSHM
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (55 customer reviews)
  • Amazon Best Sellers Rank: #15,355 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Size: Small

This seedling heat mat is 9-inch by 19-1/2-inch (Model # GSHM) is designed to fit under one of our Perma-Nest 22-inch by 11-inch plant trays (GW2211, GT2211, GS2211) or one standard seed flat. Warms the soil in the tray 10-20 degrees Fahrenheit above the room temperature, helping seeds to germinate and grow faster.

Customer Reviews

This is great to keep your seeds starting out to grow in the spring time inside when it's still cold outside.
Crissy reviews
Got this along with a Hydrofarm MTPRTC Digital Thermostat, this keeps the seed mat at a very steady 80-83/84 degrees.
ab2008
I get much sturdier seedlings when using bottom heat, and have a plastic seed tray that fits on top of it perfectly.
B Lynn

Most Helpful Customer Reviews

Size Name: Small
If you are one of those individuals or family who start their garden plants from seed you will know the difficulties sometimes encountered. Using one of these nicely made heat pads (We have two of them) will increase your chances of success greatly. If you have not purchased "ready to plant" plants for your garden from the local garden or grocery story, then I fear you are in for some sticker shock this year. These plants have been increasing in price over the past five or six years and it is going to be even worse this year...trust me, I know about stuff like that.

Anyway, the heating mats being reviewed here are a very functional product. Your success rate in growing healthy and ready to transplant plant will much greater by using these things. Now there are a couple of things to note before you get started using these things.

First, you should have a good thermometer on hand to regulate the heat of your plants. They make specialized one just for this purpose but to be honest with you, I have a digital one specifically designed to test the heat of meat while it is on the grill and it doubles in duty with my seedlings. I check on them periodically using this device. I would strongly urge you though to purchase a temperature control thingy especially designed for heat control in these mats...it will lessen your "fret" time. These mats are relatively safe to use and are unlikely to boil your plants but you can never be too careful.

Secondly, you need a very, very good source of light! I personally use very cheap banks of florescent lights on mine to supplement the weak light we receive through our windows.
Read more ›
10 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
11 of 11 people found the following review helpful By Asha's Shopping Avatar on March 12, 2010
Size Name: Large Verified Purchase
I knew I would need a heat mat that would accommodate at least 5 full flats of seedlings- and this is the right size for that number. Has done my tomatoes and peppers well over the last 6 weeks or so. Also, it works nicely with 4 ft long florescent grow lights (you really need these when growing plants from seed indoors, even if you have them near the window, or else the plants become too leggy and then are prone to disease). Also, note that you will require a seed mat thermometer unit in addition to the mat in order to keep the seedlings at a constant ideal temperature- they all work like this, not a deficiency of the heat mat- I got a "hydro-farm" one for around $30... So, happy growing!
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
8 of 8 people found the following review helpful By Brock on February 1, 2010
Size Name: Small Verified Purchase
Works well, I use with the Hydrofarm temperature controller to start seeds for the growing season.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
5 of 5 people found the following review helpful By Laura on March 19, 2011
Size Name: Small Verified Purchase
The seed starter mat is an essential for starting seeds, since many seeds need heat to germinate. This mat kept the seeds warm, and most had germinated within 4 or 5 days. I have heard of heat mats that "fried" the seeds by getting too hot, but this one gently warms them. Good product.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
4 of 4 people found the following review helpful By Mary W. on April 9, 2011
Size Name: Small Verified Purchase
I selected this model because of its size (small), price (cheap) and decent reviews. It worked well in that it gets warm and seeds sprout. Right size for a 72 cell seed starter kit.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
3 of 3 people found the following review helpful By John Doe on April 25, 2011
Size Name: Small Verified Purchase
Received the package quickly and was happy about that. The mat is of decent quality and gets nice and warm. Be sure to keep an eye on the mat the first few days as you grow used to the temp it sits at which influences how often you have to water. Can easily fry germinating seeds or unattended seedlings without humidity dome so be sure to keep an eye out. Overall very happy, made a noticeable difference in germination to sprouting time.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
2 of 2 people found the following review helpful By Foong-ling Ting on March 26, 2013
Size Name: Small Verified Purchase
The mat does what it claims-- up the temp 10 deg F above surrounding temp. As my home is at 68deg, my plant dome ( which sits on the mat) is kept at about 78deg. That being said, I sure wish there is a mat out there that could heat my dome to any temp I like, because I have some seeds that need 85F to germinate. If your surrounding temp is way low, then this mat is not for you since it will not heat your plants anymore than 10 deg above room temperature.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
2 of 2 people found the following review helpful By April D. Gatz on October 21, 2012
Size Name: Small Verified Purchase
Came on time, in good condition, maintained temp well and my seeds sprouted in record time. Did not overly-dry the peat pots and had a good temp regulation. Was not super-sensitive to water. Would definitely recommend purchasing this over trying to make a home-made version. I tried the home-made version for two years with much less success.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews