About

Over 50 years of experience harvesting and processing the seaweed Ascophyllum nodosum on the coast of Maine.

About Us


Our founder, Robert Morse, saw a need for more natural products in crop and livestock production. Lucky for him the answer was quite literally in his backyard.

Robert began hand harvesting Rockweed from local seaweed beds in Boothbay Harbor, Maine; the same wild seaweed beds we harvest from over 50 years later.

Robert was an early pioneer in the seaweed biologicals market, joining a consortium of like-minded visionaries to demonstrate the benefits of liquid seaweed extracts on crop production. This culminated in the registration of the product Nitrozyme with the EPA in 1981, as a growth stimulant on plants. Nitrozyme’s legacy lives on in North American Kelp’s lineup of seaweed-based biostimulants and fertilizers for agronomic and horticultural use.

After all this time we still hold true to the principles set forth on Maine’s rocky coastline all those years ago. We may be a little larger in scale and scope now, but we still make seaweed products the way nature intended them; to nurture and grow from the ground up.

If you’re looking for a domestic, or export, source for Ascophyllum nodosum we hope you’ll get in touch with us. We’d love to see how our products can help you.

Our Process

It all starts on the Maine coastline with wild harvested seaweed Ascophyllum nodosum. From sustainable and responsible harvesting practices, our goal is to create safe and effective minimally-processed products from this renewable resource.

Time Honored Traditions

The Gulf of Maine has long been recognized for its rich marine biodiversity. Embracing both heritage and sustainability, Maine’s seaweed harvesters play a crucial role in preserving their coastal culture while contributing to the burgeoning seaweed industry.

Harvesters

We’ve been working with our independent harvesters for decades. They are well-versed in the rocky Maine coastline, and have a vested interest in continued sustainability practices. The mechanical harvesting vessels they use ensure no bycatch leaves the water, just seaweed.

A Little off the Top

Rockweed has the amazing ability to regrow from its holdfast. Think of your lawn, you mow it every so often and it continues to grow back. Taking the top layer allows more sunlight and nutrients into the bed, which keeps the seaweed healthy and growing year after year.

Eye to the Future

Rockweed is one of Maine’s renewable, natural resources. We harvest each sector on rotation to avoid overharvesting, ensuring the seaweed flourishes for generations to come.

Interested in learning
more?

In a sea of seaweed questions, we’ve got answers.