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Internet # 100662155

Model # 100083888

Store SKU # 313562

39 in. W, 18 ft. L 58.5 sq. ft. Seed Starter Biodegradable Wood Fiber Mat Germination Blanket

$27.97
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  • Mat naturally degrades over time with no clean up needed
  • Make sure to secure mat tightly with stakes when using
  • Water thoroughly until the grass reaches 2.5 in. in height
  • View More Details

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Return this item within 90 days of purchase.

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Product Details

About This Product

The Pennington Seed Starter Mat holds grass seed in place, making it ideal for hills and slopes. The natural-fiber mat holds the proper amount of moisture for reliable germination and helps control weeds while the grass is establishing. This item is a starter mat only. Seed and stakes are not included. For directions, first plant your grass seed in bare soil. Secondly, remove the starter mat from its packaging and simply roll is out over your freshly planter seed and secure with stakes (not included). Lastly, water the area throroughly every day or until the grass reaches 2.5 in. tall. The mat naturally degrades for an easy cleanup, but the time it takes to degrade depends on the climate its used in. By staking the mat to the ground tightly, you can protect your new grass seed from birds but also prevent animals from getting trapped in the mat or getting it caught in a lawn mower. When the mat is staked tightly to the ground, this helps expediate the degradation of the seed mat.

Highlights

  • Germination blanket that holds grass seed in place
  • Grass seed blanket to hold grass seed in place
  • Biodegradable seed starter mats are easier to use than traditional wheat straw without the mess
  • Seed starter mat naturally degrades - no clean up
  • Netless blanket won't trap animals or tangle in lawn mowers
  • Seedling mat to help prevent weeds
  • Holds moisture
  • Seed starting mat covers up to 65 sq. ft.
  • Starter turf mat only (grass seed sold separately)
  • Holds moisture
  • Covers up to 65 sq. ft.
  • Starter mat only (grass seed sold separately)
  • Return Policy

Product Information

Internet # 100662155

Model # 100083888

Store SKU # 313562

Additional Resources

Shop All Pennington

Specifications

Dimensions

Product Depth (in.)

6.5 in

Product Width (in.)

39 in

Details

Landscape Supply Type

Accessory

Pack Size

1

Returnable

90-Day

Seed Starter Accessory Type

Germination Blanket

Questions & Answers

Can it be walked on
ByAug 2, 2026
1 Answer | 
Answer This Question

Hi! Yes, the mat can be walked on lightly if necessary, but we recommend minimizing foot traffic after installation. Keeping the area undisturbed will help protect the seed and promote the best possible germination. If you have any additional questions, please give us a call at 1-800-285-7333.

By|Aug 3, 2026


    what is this made of?
    ByJul 8, 2026
    1 Answer | 
    Answer This Question

    Hi! The Pennington Seed Starter Biodegradable Wood Fiber Mat is made primarily from natural wood fibers (excelsior). It helps retain moisture, protect seed from wind and rain, reduce erosion and seed washout, and create an ideal environment for seed germination. As your grass becomes established, the mat naturally biodegrades, so there is no need to remove it.

    By|Jul 10, 2026


      Is the seed variety in this product suitable for an area that is shady. ?
      ByNov 17, 2025
      1 Answer | 
      Answer This Question

      Hi Karl- This product does not contain any seeds. It is a germination blanket designed to hold grass seeds in place, help prevent weeds, and retain moisture for reliable germination. If you are planting in a shady area, you will need to purchase grass seeds specifically formulated for shade separately. The mat can then be used over those seeds to protect them and aid in their growth.

      By|Sep 30, 2026

        (2)

        We used this product and grass is growing but in spots it looks like the grass is dying. Is there something we can do to fix this?
        ByAug 19, 2025
        2 Answers | 
        Answer This Question

        Hi Kwalk, in order to further assist you, we need some additional information. Please give us a call and tell us a little more about what happened. Our team will be more than happy to assist you. You can reach us at 1-800-285-7333.

        By|Aug 19, 2025

          Pull it up now before it's too late. It doesn't biodegrade and will eventually choke out all new growth

          By|Sep 14, 2025


            Do you have to anchor the mat on a slight slope?
            ByJun 12, 2025
            1 Answer | 
            Answer This Question

            Hi Kenm- Yes, it's highly recommended to anchor the mat, especially on a slope. You can use landscape staples or pins every 5' to 7' to secure the mat to the soil and prevent it from shifting or being washed away by rain. This will ensure good seed-to-soil contact for optimal germination. If you have any other questions, please feel free to give us a call. You may reach us at 1-800-285-7333. Thanks!

            By|Aug 17, 2025


              Will this work for creeping thyme?
              ByMay 23, 2025
              1 Answer | 
              Answer This Question

              yes, the product is used for any seed starting project. Thank you

              By|May 23, 2025


                what is the color used to make the mat green? Is it natural?
                ByNov 13, 2024
                1 Answer | 
                Answer This Question

                Food grade green dye. Thank you.

                By|Nov 13, 2024


                  The mat isn’t biodegrading
                  ByAug 27, 2024
                  1 Answer | 
                  Answer This Question

                  Hello, Please contact customer service so we can assist you further at 1-800-285-7333. Thank you.

                  By|Aug 28, 2024


                    Viewing 1-8 of 73

                    Customer Reviews

                    3.3 out of 5

                    • 3.3 out of 930 reviews
                    • 52% recommend this product
                    Filter by:
                    Showing 1-10 of 930 reviews
                    Do not buy this!
                    Laid this down 3 years ago. Degradable is not a word that should ever be used with this product. I used this product exactly as described. Cleaned up once the grass was tall enough. I couldn't get all of the green blue stuff off the lawn but I thought that was going to be alright. It was absolutely not alright. The first year was great. Though I had done a great job starting a new lawn. 2nd year I started to get patches by late spring. By the end of that summer half my lawn was dead. I dug about 2" down and found a scoop full of the blue stuff was matted down under the grass. This was choking off the grass and causing weeds to grow on top. The soil underneath was dry and full of dead roots. I will have to dig out my entire yard to get this out. Talk about a waste. I am pulling this stuff out my compost pile every turn. This is a horrid product that needs to be taken off the market.
                    by
                    Response from Pennington TeamMar 24, 2026
                    Hi there- We’re very sorry to hear that the germination blanket didn’t meet your expectations. We would appreciate the opportunity to learn more, as your feedback is truly important to us.
                    If you would like to speak with us, please feel free to give us a call at 1-800-285-7333. pennington
                      1 found this review helpful
                      Warning!!!! Do not use!!!
                      Followed the directions. Worked great the first year. 2nd year I started getting dead patches. Didn't think much of it. Filled patches, things were ok. Now I'm digging up my whole yard to find this stuff under all the dead areas. This does not break down. Do not use this product. Unless you want to reno your yard every couple years.
                      by
                      Response from Pennington TeamSep 15, 2025
                      Hello there Retiller- We are sorry to hear about your experience with our product. We would like to hear more, as your feedback is truly important to us. If you have a moment, please give us a call at 1-800-285-7333. Thank you! pennington
                        1 found this review helpful
                        Works well with reconditioning marine clay yards.
                        I have bad erosion in multiple places in my yard. Coupled with birds getting at the grass seed as soon as it goes down. After breaking up the dirt, adding some soil and seed, I roll this out to keep everything in place. It is a bit expensive, but requires less effort to do. Just roll it out and wet it in as per the Instructions. No yard staples or stakes like you need with straw blankets.
                        by
                          • Recommended
                          It works great
                          I have had great success with this product. Keeps the seed in place and keeps the birds and squirrels out.
                          by
                            • Recommended
                            Question
                            Is this how it’s suppose to Look after I wet it?
                            by
                              • Recommended
                              deteriated, staked it down still fell apart. Buy the more expensive straw version.
                              by
                              Response from Pennington TeamApr 17, 2025
                              We are sorry you had issues with our product. Please give us a call if you wish to discuss further.
                              800-285-7333 pennington
                              • Verified Purchase
                              Worked like a charm! I was surprised that it worked so well. Better than expected! I highly recommended!
                              by
                              Product is terrible
                              Bought this for our yard where we were trying to grow grass seed on a hill. At first grass was growing through it beautifully. After a couple of weeks of watering the mat started sticking to the ground in a few places and the grass started turning gray. It says it will disintegrate on its own but it doesn’t and ended up trapping moisture. I had to hand pick it off and it was the consistency of cotton candy. Not anywhere close to disintegrating. Now we have grass with root rot that is dead.
                              by
                              Response from Pennington TeamOct 12, 2024
                              Hello, We are sorry to hear about your experience with this product. Please contact customer service so we can assist you further at 1-800-285-7333. Thank you. pennington
                                1 found this review helpful
                                Worked like a charm even in the summer heat - just make sure it stays wet until your grass grows well through it. I will be buying more!
                                by
                                • Verified Purchase
                                I cannot advise against this product enough
                                I had some patchy areas in the corners of my yard. In place of straw, I bought 7 rolls ($175 worth) and spread it out after applying seed and watered it. The next day 6 of the 7 rolls were the nastiest yellow-brown shade which made my lawn look hideous, but i figured oh well, it will be worth it. Here we are 3 weeks later and not only did nothing grow, it killed all the grass under it and around it. This stuff is a joke and Pennington definitely owes me a refund. Absolutely do not buy this JUNK!
                                by
                                Response from Pennington TeamJul 12, 2024
                                Hello, We are sorry to hear about your experience with this product. Please contact customer service so we can assist you further at 1-800-285-7333. Thank you. pennington
                                  Showing 1-10 of 930 reviews