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Model #G313-48H

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12 Qt. Organic Seed Starting Mix

  • Designed for use with container gardening
  • Contains vermiculite to ensure moisture retention
  • Ideal for special pH and nutrient needs of seed varieties
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Product Overview

An ideal choice for your seed starting project, our Jiffy 12 Qt. Seed Starting Mix is all natural and 100% organic. This mix is nursery grade quality and blended for maximum root development. Designed for the special pH and nutrient needs of your seed and plant varieties. Use what the professionals use to start their seeds and experience the difference.
  • Best mix for the best results
  • Peat moss for nutrient balance
  • Coir for drainage
  • Vermiculite for moisture retention
  • Free of weeds and disease organisms
  • Use for container gardening
  • Growing mix contains no soil
  • Mix is a homogenous composition with extensive water and air capacity and high structural stability creating the perfect environment for new seedlings root development
  • Best to pour needed amount into a bucket or bowl and mix with warm water, then transfer to growing container
  • OMRI

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Seed TypeSeed Starter KitSeed Starter KitSeed Starter KitSeed Starter Kit
Landscape Supply TypeSeed Starter KitSeed Starter KitSeed Starter KitSeed Starter Kit
Number of Pieces1111
View ProductView ProductView ProductView Product



Product Size12 QT-Quart


Landscape Supply TypeSeed Starter KitNumber of Pieces1
Returnable90-DaySeed TypeSeed Starter Kit

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Customer Reviews

  • 4.4
    out of 568 reviews
  • 77%recommend this product
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Showing 1-10 of 568 reviews
Amazingly Fast Sprouts
I wanted Spaghetti Squash. No transplants that I could find. Darn little seeds sprouted in TWO DAYS! They are 6" after a week. Something worked. Gotta think it was this. I planted in the Jiffy Pots holder with 7 pots. Neat arrangement!
  • Verified Purchase
  • Recommended
Say yes!
Great product, great price. Better volume than competitors for a better price. My 200+ seed starts are doing well!
  • Verified Purchase
Moldy right out of the package
Purchased some of this Jiffy seed started from my local HD and upon opening the bags found that they were all moldy. I tried to reach out to Jiffy via their Socials contact buttons and via their Email, but it's been a few weeks and still no reply. Very unhappy and had to throw out the packages and purchase a different brand all together (which was perfect).
    1 found this review helpful
    The most water repellent garbage I’ve ever used in my life. Must mix in a barrel or bucket to get it to combine with water first before using in seed trays. If not it will NEVER absorb water. Pass
      4 found this review helpful
      Good texture, does not hold moisture well. Needs daily watering....
      Good texture, does not hold moisture well. Needs daily watering.
        Burn seedlings
        So, I have been using this product to grow seedlings for few years now. However, this year it's been a complete disappointment, the seedlings germinated as usual but I noticed now growth is going on although I am following exactly the same steps as I do every year. Then, the seedlings started to change leaf color into dark green, purple,redish and finally yellow in the form of two-three days. It is strange I use a NON GMO seeds every year to grow specific varieties of plants. This indicates after some further experiments from my side that there was plenty of seed fertilizer added to it.Also, I completely agree with other reviewers that it will not retain water and will harden like a rock at once so you will need to keep watching. Unfortunately, I have lost all my seedlings this season( Thank you Jiffy!!!) for this product. Will now start thinking to make my own mix for next season. I checked the soil acidity and it was OK, so the main reason-I think. Is too much seed starter fertilizer!!!! NO MORE JIFFY'S!!
          2 found this review helpful
          It works well. The product does a great job of...
          It works well. The product does a great job of holding water for seed starting. I always soak the soil then squeeze out the water before putting it into my seed starting pots. I find that this leaves enough moisture in the soil to start the seeds without having to water them. The Jiffy seed starting mix was also a great value. For a dollar more, it had twice the amount of seed starting soil than the competitors. Why would you not want more?
          • Verified Purchase
          Great Seed starting.
          Started my Tomatoes, Peppers, and Basil using this product. One bag will fill 1 and 1/2 18 seed tray. Moisten the soil before sowing the seeds.
            2 found this review helpful
            Seed Starting
            This particular mix was nice for starting my seeds indoors this spring. It was light and airy and had a nice earthy smell to it....I like that it was all-natural with no chemicals, too. I did have to place what I wanted to use by container pot in a big bucket to start off and add warm water to it and mix it up to get it at the moisture level of where I wanted it. I found that helpful because it can be "dry". I did some container pots for my deck and I was very pleased with my flowers, especially my sunflower. The seeds came up nice in this starter mix and then i just added some compost and potting soil to it as it grew bigger this summer. It added some density to it so the wind wouldn't blow it over. The roots seemed very strong. I would definitely recommend it for starting plants when using seeds.
              • Recommended
              5 found this review helpful
              Great seed starter with the exception of some mulch found in the mix. Upon opening a fresh bag, t...
              Great seed starter with the exception of some mulch found in the mix. Upon opening a fresh bag, these soil is nice and moist so it is easy to add to seed starting trays, compress in there and do the initial watering. When this soil eventually dries out, it is much harder to compress and do the intial watering with. It can take up to 20 minutes for it to soak water when it is dry. This mixture appears to have a good amount of peat moss in it and also coconut coir and vermiculite. My seedlings love it and it is great for organic gardening. This mix is made in Canada.
              • DIY
              • Recommended
              6 found this review helpful
              Showing 1-10 of 568 reviews