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🌿 Sprout smarter, grow greener — your garden’s organic edge!
Coast of Maine’s 8qt Sprout Island Blend is a premium, ready-to-use organic seed starter mix enriched with mycorrhizae, worm castings, kelp, and fully cured compost. OMRI-certified for organic use, it ensures optimal moisture retention, aeration, and nutrient delivery to support vigorous seed germination and root development. Trusted by thousands since 1996, it combines sustainable sourcing with proven performance for both indoor and outdoor gardening.


















| Asin | B07TBH5ZWN |
| Best Sellers Rank | #13,382 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #509 in Garden Fertilizers |
| Brand Name | Coast of Maine |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,061) 4.5 out of 5 stars |
| Item Weight | 5 pounds |
| Manufacturer | Coast of Maine |
| Manufacturer Part Number | SI4500 |
| Model Number | Sprout Island Blend |
| Number Of Packs | 1 |
| Style Name | 1 Pack |
| Unit Count | 8 Count |
| Upc | 609853000986 |
| Volume | 8 quarts |
User
Great starter soil
Works great. Needs little to no feeding depending on what you grow with it
User
Great product, will buy again!
This is a great seed starting medium, for ALL garden seed types. We also use it to transplant seedlings & plants, to lessen the shock. Works great! Will definitely buy more!
User
It works!!
The seller of my hot pepper seeds recommended this product. I planted some seeds in it 3 weeks ago and they've germinated - not at all like last year in plain potting soil. Highly recommended - for any midwestern gardener who likes to start flower or veggie seeds indoors in March.
User
Weighs about 40lbs +
When coming to give my review I thought I'd check for more details I missed before doing so. First off, shockingly, When I saw that for 2 cu ft that it weighs 4.4lbs. It's 40lbs and thats being conservative. I checked the COM website and it states 40lbs which might matter to some if they can't see the fine details. I can only say what I received and it's completely dry, unlike elsewhere where they store outside in the rain. It's very light and fluffy which was what I had hoped. No chunks of wood material at all, just feathery light stuff. I do a 60/40 seed starter to vermeculite mix. I'm trying for the first time to do the water jug winter sowing and since it was going to rain I prepped my jugs added the soil and vermeculite then let mother nature do her job. It's looks and feel nice and absorbed the rain. I put holes about a 1/2 to 2/3 inch up from the bottom so the water will pool at the bottom so I don't have to water as often. I'd heard doing this method with holes on the very bottom they dry out very quickly. When I plant the seeds I'll be also using a Summit Mosquito Bits, mosquito/gnats water solution to sprinkle on top of soil in case there's any gnat eggs waiting to hatch. In my Update I give the recipe once I've finished in a few days. My only disappointment is that the price went up $10 since I ordered a few weeks ago. I'll just drive to my local (20 miles away) garden center and pick up some very wet but much cheaper bags of it. Next year I'll 2 or 3 bags. If it comes down before I go do a pick up then I'll buy from this vendor. My local is $32. Very fast and well packaged.Update: I upgraded to 5 stars because I find this product to be an excellent choice for planting and shouldn't be reflective in the price increase of it now being $8.xx increase from my original buy but wish I could get it in the smaller bags for easier transporting at a cost effective price. Next year....
User
Good soil - plants grow well
Love this soil though sometimes I have to fish out bits of sticks or pieces of garbage bags I- mostly it is excellent quality however. Have germinated many fruit, veg and flower seeds in this. Have bought again- great brand - have not had trouble with insects in bags, good clean soil. Wish it was a bit cheaper because I need lots as I start everything off indoors for our short NH growing season.
User
Seller was very prompt a
Good quality product
User
Great Product
This is an awesome seed starter. Three days after planting sprouts were 1 centimeter. Nine days they were 2 1/2 centimeter’s. I recommend.
User
My Go To Seed Starter Mix
For years, I've maintained a vegetable garden year-round. In the summer I grow several varieties of pepper, tomatoes and other vegetables. In the fall, I switch over to collards, kale and broccoli varieties. In between I grow several varieties of marijuana. No matter what I grow I start my own seeds in trays indoors under lights indoors and contribute much of my success to using COM Seed Starter. It allows me to start organic and remain so throughout the plant's lifecycle. There are a lot of "seed starters" out there and I've tried my fair share sometimes with disastrous results. With Coast of Maine Seed Starter there's no guesswork and a greater chance for gardening success.
Trustpilot
1 month ago
1 month ago