MSRP: $9.99$24.99

OMRI listed, Sprout Island Organic Seed Starter is designed for seed germination & rooting plant cuttings. It is ready-to- use in cell packs* or flats and provides natural moisture retention & aeration. Includes mycorrhizae, worm castings, kelp and fully-cured compost.  *If using cell packs, Sprout Island is recommended for use in cell packs sized 72 or larger.  Available in 16 Quart and 2cf bags.

We believe this is the best organic seed starter you can buy and, as always, it comes with a 100% satisfaction guarantee!

You can purchase this product online, but we also encourage you to check our store locator. We love sending customers to locally owned businesses! Click on the link, type in your town or zip code and then click on the store tab or name for all the store contact information. You will also be able to see if they carry the products you are looking for!

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Healthy soil is the key to healthy plants

Healthy soil rich in organic material is the key to growing strong, healthy, disease resistant plants that will require less watering and feeding.

The best source of organic material is compost…naturally recycled plant and animal matter that has been allowed to slowly decompose into dark, rich humus.

recycleHere at Coast of Maine we are proud of the quality of our composts. We start with carefully designed and tested recipes and the very best ingredients. Just as important, we pay close attention to detail throughout the composting process. That means frequent turning, sampling and testing and a lengthy aging and curing process.

Coast of Maine’s Sprout Island Blend Seed Starter has a mild organic fertilizer charge creating a biologically diverse environment ideal for germinating seeds and rooting cuttings.

Remember, healthy soil is the key to growing healthy plants.

We use all natural ingredients

Sprout Island Blend is a rich mixture of blended sphagnum peat moss, perlite, kelp meal, worm castings and well-aged compost. It was designed specifically for germinating seeds and rooting cuttings and growing them into healthy, disease resistant plants.

For organic production

organicburstSprout Island Blend meets the organic production standards of the Maine Organic Farmers & Gardeners Association (MOFGA) and is permitted for use in the production of MOFGA certified organic crops. It is also OMRI Listed for organic use by the Organic Materials Review Institute.

The Coast of Maine guarantee

We have developed a line of compost-rich soils, mulches and fertilizers designed to meet the most demanding needs of the amateur gardener. We are also creating recycling solutions for local aquaculture and agriculture.

If you are not completely satisfied with the results, we’ll be happy to refund the retail price paid. Please feel free to contact us at:

By Mail:    Coast of Maine, Inc., 145 Newbury Street, Portland, Maine 04101
By Phone: (800) 345-9315
By E-mail:

Follow these few simple steps

plantingSeed Starting  *If using cell packs, Sprout Island is recommended for use in cell packs sized 72 or larger.

  • Thoroughly moisten the mix with warm water before use. Make sure it is well mixed so that there are no dry areas but be sure not to make it too soggy.
  • Fill the planting container to within 1/4 inch from the top and tap container to slightly settle the soil.
  • Plant your seeds according to the directions on the seed packet.
  • Water-in the seeds lightly without saturating the entire soil volume.
  • Place in lighting and temperature conditions as per the seed packet.
  • After the seeds have germinated, provide them with 12-14 hours of light per day, keeping them close to the light source to prevent leggy growth.
  • After 3 weeks, top dress with Stonington Blend Organic Plant Food and water it in.

Root Cuttings

  • Choose green, non-woody stems for taking tip cuttings.
  • Use a scissor or razor blade that has been sterilized in alcohol to make a clean cut.
  • Place the cutting on a flat, hard surface and make a clean slice through the stem on a slant.
  • Remove all but 1 or 2 leaves.
  • With a pencil or pointed object, poke holes into the moistened seed starting soil.
  • Dip the node end of the cuttings into water and then rooting powder if desired.
  • Carefully place the cuttings into the holes you made in your Seed Starter soil and gently firm the soil around them.
  • Place the container of cuttings into a plastic bag but don’t seal the bag completely, to allow some air flow.
  • Place the bagged cell pack, tray, flat or other container in a warm spot in the house but don’t put them into full sun until new growth appears and they can be removed from the bag.
  • Check regularly to be sure there is not so much condensation on the top of the bag that it is dripping onto the seedlings. If this happens, the seed starter soil is probably too wet.
  • Replace the bag and allow the Seed Starter soil to dry out a bit.
  • Check your cuttings regularly in case they start to rot before they root. Remove any suspect cuttings as soon as you see evidence of rot.
  • Keep the cuttings moist and in a few weeks check for roots by tugging gently on the cuttings and testing for resistance. Once the cuttings have developed roots, they are ready to be removed from the bag and planted into pots of their own filled with Bar Harbor Blend Potting Soil.