SeaCoast Compost bags in the garden
Organic • Biodynamic®

SeaCoast Compost

Our compost is a living soil made from dungeness crab and pink shrimp shell, wild fish, organic cow manure, and coastal red alder. It is enlivened with biodynamic preparations, aged two years, and screened to 1/4" before bagging. Bagged in 12 quart and 1 cubic foot.

  • Diverse, nutrient-rich raw materials. Everything from NPK to trace minerals, SeaCoast offers in abundance.
  • Helps plants establish faster, with no risk of burn. Two years of aging turns raw material into finished humus, so nutrition is ready for roots to use the day you spread it.
  • No residual herbicides. Most compost contains municipal yard waste, laden with herbicides. Our ingredients are intentionally curated for an optimal nutrient profile to be herbicide-free.
  • Alive, and we can prove it. Bacteria, fungi, and protozoa counted under a microscope in every batch. Living soil is what makes nutrition available to roots.
Find compost near you Buying in bulk?
Demeter Certified BiodynamicCDFA Registered Organic Input MaterialMade in Oregon, USA
SeaCoast Compost has transformed my garden. It has made my flowers, fruit and vegetables, lawn, fruit trees, and potted plants vibrant and healthy, with yields that are double, even triple the size that they were before. And SeaCoast Compost does it all; there's no need for added fertilizer or boosters. My plants have never been happier!
Rebecca Kennerly

Frequently Asked Questions

Is it worth buying compost instead of making my own?

Making your own is a good thing to do and we would never talk you out of it. It is also slow, and what you get depends on what went in. Buying gives you finished, tested, biologically mature compost the day you need it, at a known quality. The two years and the batch testing are what you are paying for.

Why did compost hurt my plants last time?

Almost always because it was not finished. Immature compost is still actively decomposing, and it takes nitrogen from the surrounding soil to complete the job, which starves whatever you just planted. Ours is aged two years and tested for maturity so it arrives done.

How strong is it? What is the NPK?

Deliberately modest. Compost is a soil food, not a fertilizer spike, and a lean, balanced profile is what lets you use it generously without burning anything. The strength is in the biology and the full range of minerals rather than one loud number.

Can I use too much?

Yes. Stick to the rates above. A quarter to a third of a potting mix, an inch or so on top of a bed each year.

Compost or mulch?

They do different jobs. Compost feeds and improves the soil. Mulch sits on top to hold moisture, moderate temperature, and keep weeds down. Plenty of gardens want both.

Does it smell?

Like soil after rain. Finished compost has an earthy smell and nothing more. The fishy note people expect from marine inputs is long gone by the time two years have passed.

Is it safe around food crops, pets, and kids?

Yes. We screen every batch for pathogens, heavy metals, and contaminants, and it is certified organic.

What sizes does it come in?

Two bag sizes. The 12 quart bag suits containers, seed starting, and a small bed, and the 1 cubic foot bag is sized for home beds and borders. For farms, growers, market gardens, and landscape projects we load loose by the cubic yard. Find a retailer

Do you deliver in bulk?

We deliver throughout the nation by the pallet and throughout Oregon by the truckload. Bulk Compost →

Where can I buy it?

Through nurseries, garden centers, and natural food stores across 16 states, or direct for bulk orders. Where to buy

Find SeaCoast Near You

Our compost is stocked at garden centers, nurseries, and co-ops up and down the coast. Find the one nearest you.

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