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Seed Starting 8 qt. Potting Soil Mix

  • For use with seed or when starting cuttings
  • Designed for fast root development
  • Should only be used for plants in containers
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Product Details

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Start your plants on their way to a more beautiful state with the Miracle-Gro Seed Starting Potting Mix. The mix is enriched with Miracle-Gro Plant Food and is specially formulated for fast root development. It is excellent when starting from seed or starting plants with leaf, stem, or root cuttings. Use it in containers, and get your plants growing faster with Miracle-Gro.

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

26Questions
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Q:Hello so is this ok to put in big pots and let plants grow on a window sill
by|May 14, 2023
1 Answer
Answer This Question

A:  Miracle-Gro Seed Starting Potting Soil Mix can be used for seed starting in containers. For larger plants in containers we suggest using Miracle-Gro Potting Mix.

by|May 16, 2023
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    Q:Can I use this potting soil to plant patio tomato, cucumbers and peppers in containers?
    by|Mar 31, 2023
    4 Answers
    Answer This Question

    A:  I only use this for sprouting seeds then I transplant to pots or garden. I think this mixture is too light for growth all season. I usually use the garden or regular potting soil for my peppers and tomatoes I grow in pots on my deck outside 

    by|Apr 4, 2023

      A:  You can but using regular potting soil is more economical. I use this to start seed only.

      by|Apr 2, 2023

        A:  Yes

        by|Apr 7, 2023

          A:  Miracle-Gro Seed Starting Potting Soil Mix is specially formulated for for starting your plants in containers. This product is specially formulated for fast root development. After first true leaves form, transplant seedlings into Miracle-Gro Potting Mix into larger containers.

          by|Apr 1, 2023
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            Q:What is the amount of nitrogen (N), phosphate (P2O5) and potash (K2O)?
            by|Mar 20, 2023
            2 Answers
            Answer This Question

            A:  I am sorry but I have no clue. Try looking online.

            by|Mar 25, 2023

              A:  NPK Analysis for Miracle-Gro Seed Starting Potting Soil Mix is 0.03-0.03-0.03.

              by|May 20, 2023
                2 found this answer helpful
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                Q:The video associated with this product shows a clear colored material in a small container that is applied to the stem of the cutting. What is this material?
                by|Dec 19, 2022
                3 Answers
                Answer This Question

                A:  Rooting powder. 

                by|Dec 25, 2022

                  A:  Miracle-Gro Fast Rooting Hormone is applied to the cutting to help roots form quicker.

                  by|Dec 20, 2022

                    A:  perlite

                    by|Dec 22, 2022
                      Showing 1-4 of 26
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                      Customer Reviews

                      4.4 out of 5
                      (859)
                      • 4.4
                        out of 859 reviews
                      • 62% recommend this product
                      Filter by:
                      Showing 1-10 of 859 reviews
                      Miracle-Gro seed starter soil
                      This is good, it helps plants grow !
                      by
                      • Verified Purchase
                      Screen the soil before you use it
                      Seed starting mix should not have ANY chunks, twigs, sticks, or large pieces of anything. It should be soft, fluffy, and have no obstructions for seeds to germinate and sprout through to the surface. This bag, and others I have also purchased, had a ton of the junk you don't want. I had to spend time screening and picking out these pieces before I could use it. At the price of a much larger bag of potting soil, this seed starting soil should be pristine. I expect more from Miracle Gro.
                      by
                      Response from Miracle-Gro Consumer ServicesMar 10, 2023
                      We're sorry to read about your disappointment with Miracle-Gro Seed Starting Potting Mix and appreciate your feedback.

                      Most of our soils, especially potting mixes and garden soils, are made of composted forest products and contain very little if any actual soil. Composted forest products provide high organic content and nutrients without the concern for soil compaction which often occurs with potting mixes composed primarily of actual topsoil. The coarser material allows for air to reach the roots of the plant which improves plant performance. While small pieces of bark and twigs are intentional components of our growing media, including potting soil, garden soil, lawn soil, topsoil, etc., you should not find large pieces of wood or bark.

                      We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 877-220-3089 if we can further assist. miracle-gro
                        2 found this review helpful
                        Great soil
                        Great starting soil!
                        by
                        • Verified Purchase
                        • Recommended
                        This "seed starting mix" is anything but
                        This "seed starting mix" is anything but... loaded with sticks and chunks of wood, not properly screened, garbage.
                        by
                        Response from Miracle-gro TeamApr 20, 2022
                        Sorry to hear that you found large sticks of pieces or bark in your bag of Miracle Grow Seed Starting mix. While small pieces of bark and twigs are intentional components of our growing media including potting soil, consumers should not find large pieces of wood or bark. Most of our soils especially Potting mixes and garden soils are made of composted forest products and contain very little if any actual soil. Composted forest products provide high organic content and nutrients without the concern for soil compaction which often occurs with potting mixes composed primarily of actual topsoil. The coarser material allows for air to reach the roots of the plant which improves plant performance For years. Professional growers have used potting media with a significant amount of bark pieces because it is a superior growing media for potted plants. This Product is backed by a money-back guarantee. for further assistance please call us at 1-877-220-3089. miracle-gro
                          2 found this review helpful
                          Seedlings popping up
                          This is my first time using seed starting mix. Usually I use regular Miracle Gro potting mix to start my Marigold and Celosia seeds which had about 90% germination. But not much success with other variety of seeds. This year I’m using Miracle Gro Seed Starting Mix and all varieties of my seeds germinated close to 90%. Here I have so far, Silver Sage, Mother of Thyme, Bachelor’s Button, and Cosmos. The bag is lightweight enough for a child to carry. This also means the mix is very dry. Before sowing, I pour the mix into a bowl, and mixed thoroughly with water until evenly moist. This guarantees there are no dry pockets which will be hard to fix once you sow your seeds. But once they’re moist, water passes through easily. I only watered once in the two weeks that have gone by. I did find a bit of white mold growing on the mix of my Bachelor’s Buttons. It was caused by the tray being covered. Once I removed the cover, the mold stopped growing. I did not have mold on my other seedlings which were not covered. The bag did have a moldy smell even when not opened. I didn’t see any gnats. Yes there were sticks I had to pick out so there is some work. I’m looking forward to sowing my zinnias and marigolds soon.
                          by
                            • Recommended
                            Nothing special about this mix.
                            If you want super fine texture, this is not it. For example, it is not fluffy and airy like peat moss, if that is what you have in mind. This product (as do most seed starting mixes) has twigs and sticks in it; some rather sizable. If you are going to use it indoors, you will need to sterilize this product (like all others). Place it in a bucket or tub and saturate it with boiling water. Cover and wait a few days for it to dry, then use it indoors. If you don't do this you will be plagued with gnats.
                            by
                            Response from Miracle-gro TeamJan 27, 2022
                            Thanks for your feedback about Miracle-Gro Seed Starting Potting Mix. While small pieces of bark and twigs are intentional components of our growing media including potting soil, garden soil, lawn soil, and topsoil, you should not find large pieces of wood or bark. Please give us a call at 877-220-3089 for assistance. miracle-gro
                            • Verified Purchase
                            4 found this review helpful
                            Hydrophobic soil
                            I used the miracle grow seed starting mix for years. Starting this spring every bag I use seems to be "hydrophobic". You literally can't get water into the soil. When I water my flats the water pools and runs off with half my soil in seeds. It ends up being a huge waste of money as I'm losing expensive seeds. Sounds like others are having this issue as well.
                            by
                            Response from Consumer ServicesOct 21, 2021
                            Moss, we're sorry to hear about your experience with Miracle-Gro Seed Starting Potting Mix. We'd like to offer our assistance with the product guarantee. Please reach out to us here: https://tinyurl.com/y9nlw5xl
                              Very good seed starting mix...
                              Very good seed starting mix
                              by
                              • Verified Purchase
                              Too many sticks in the seed starting mix!
                              Just purchased a bag of Miracle Grow Seed Starting Mix at Lowes. I opened it to pot up some Canna seeds and it is full of sticks. Seed starting mix shouldn’t have sticks or large chunks in it!
                              by
                              Response from Consumer ServiceFeb 19, 2021
                              We are sorry to hear of the problem you have encountered with the Miracle-Gro Seed Starting potting mix. Most of our soils are made from composted forest products, meaning it would be normal to see small pieces of bark and twigs. Composted forest products provide a high organic contact and nutrients without concern for soil compaction. All of our product carry a satisfaction guarantee if you would like to discuss this further please use the following link: https://tinyurl.com/y9nlw5xl
                                23 watt CFL 3' above seedlings kills pathogens ~
                                23 watt CFL leaks a little bit of U.V. which can burn seedlings so keep the CFL further away. Germinated seeds are white with no green. Need to green a little with very gentle light and then move closer to the light. I use 2 of these 8 watt 5000k daylight LED 800 lumen house light bulbs and 1 CFL in a brooder light which is probably 2700k to 3000k and its warm in color and its 1600 lumens. I also saw mold and fungus that probably came from the seed starting mix and the CFL removed all the pathogens that cause damping off. 100% success with every seed germinated. 3200 lumens total with 3 light bulbs to start. I use an old Sekonic camera light meter and when light is at least 500 lumens per square foot seedlings thrive. ½ warm ie 3000k and ½ blue ie 5000k Kelvin Temp. Room temperature average around 70 degree's. These seedlings are 5 weeks old. Excellent product and perfect fertilizer just right I don't have to worry about plant food. These suggestions enhance an excellent product. I hope this helps. I'll be buying more of this excellent seed starting product.
                                by
                                  • Recommended
                                  Showing 1-10 of 859 reviews

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