Brown Algae

Knotted Wrack

Ascophyllum nodosum

Long, strap-like fronds with large egg-shaped air bladders spaced along each blade — a slow-growing, long-lived wrack.

Let’s grow Knotted Wrack together

So far we have only worked with Knotted Wrack (Ascophyllum nodosum) on a smaller scale. If you’d like to develop it, let’s talk through the possibilities together.

A project we can run together

We would approach Knotted Wrack as a joint cultivation and research effort — collecting local material, trialling seeding methods and sharing what we learn about the species along the way. It is a good fit for farms, research groups and restoration projects who want to break new ground with us.

Knotted wrack 24 hours after the egg has been fertilised.
Knotted wrack 24 hours after the egg has been fertilised.

Plan a season ahead

Because every line is produced to order from local material, we need lead time. Reach out well before your deployment window so we can collect, seed and grow in time.

Nothing here is binding — just fill in as much as you can so we get an idea of the scope. You can also call us on +45 41 82 89 70

Other seaweed we work with

← All the seaweed we grow