Our custom designed seed starting mix.
Excellent for seed starting, transplanting and container growing. 512 Mix is made from a 1/2" screened blend of sphagnum (brown) and sedge (black) peat mosses, compost and perlite. Contains ample nutrients to carry most plants from seed to transplant. Some high nutrient-demanding crops may benefit from supplemental feeding. The mix does not require as frequent watering as all-sphagnum mixes like Redi-Earth or Pro Mix, and is excellent for soil blocks, trays and small containers. Available in three sizes.
This product cannot be shipped to Canada
This product cannot be shipped outside the United States
Learn more in the 'Symbols Explained' and 'Diseases Resistance' tabs!
In stock
This product qualifies for quantity discount pricing.
| Quantity | Per Item Discount |
| 5+ | $4.25 |
Note: Additional shipping charges apply to the sizes listed below, and will be added to your final total.
| Product Size | Zone A | Zone B | Zone C |
| 1 Unit | $23.00 | $33.00 | $89.00 |
Click here for detailed zone information.
We will contact you with shipping pricing if you live in a U.S. Territory, Canada, or an International Area.
Notes:
SHIPPING NOTE: This item's size, weight, or shape requires shipment via ground transportation. The appropriate "Zone" additional shipping charges will be applied at checkout. Please remember to supply a street address.
Johnny's 512 Mix OG is also available in 20-quart bags (Item #9227) and a 2-yard bulk size (Item #9357) which requires a freight quote and cannot be purchased online. Please call the Commercial Department at 800-854-2580 for shipping and pricing information on the 2-yard bulk size.
NOTE: We are unable to ship this item to Canada, HI, or outside the U.S. at this time.
Additional Information:
9228 | Johnny's 512 Mix | Product Label
Disease Resistance:
No disease information found.
Growing Information:
No additional growing information available.
Symbols Explained:
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Johnny's Exclusives Sold exclusively by Johnny's. |
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Organic Seeds and Supplies For seeds, OG means "organically grown" and signifies seeds harvested |



