Sea spaghetti supplied by Horizon Seaweed | Species guide

Harvested to: Apr
Harvested from: - Jul

This is a species of the lower shore. It grows in thick patches on exposed shores and particularly enjoys high wave action.

It is a common brown alga and gets its name from its long string like fronds. One shoot grows from a button and then repeatedly divides, reaching 2 meters in length by summer.

Typical uses: A fantastic eating seaweed, this really is a standalone in the wrack family. Not just a substitute for pasta, it is an excellent salt replacement, it also is rich in umami and goes well with too many foods to list!

Food & drink Human health Research

Sea Spaghetti thumbnail — Months of wild harvest sea spaghetti production

We have developed a detailed knowledge of harvest seasons. Specifically, it may be possible to pick small quantities of a variety early in a season, but we delay first harvest until the rates reach commercial scale. Indicative seasons for our key species are given below. Please contact us if you would like to learn more about production months.

Species	January	February	March	April	May	June	July	August	September	October	November	December
Sea Spaghetti Himanthalia elongata	Is currently not available during January	Is currently not available during February	Is currently not available during March	Is available during April	Is available during May	Is available during June	Is available during July	Is currently not available during August	Is currently not available during September	Is currently not available during October	Is currently not available during November	Is currently not available during December

We have had a bespoke seaweed blend specifically tailored for a daily dose of iodine created for us by Horizon Seaweed. Their expertise and knowledge has been invaluable to us in our product development and we look forward to working with Horizon going forward. The team is also extremely helpful and supportive at all times and highly professional.

Dr Pieris Nicola, Managing Director, Rosita

We have used Horizon Seaweed for several years now and are always struck by the quality and range they supply. The seaweeds always looks bright and rich in colour and have that wonderful fresh sea smell.

Abby Render, Sourcing Manager, Indigo Herbs

It is important to Exale Brewing that we source interesting ingredients of the highest quality. Horizon Seaweed provided different varieties to trial so we could ensure the flavour in our award-winning Deep Dark Imperial Stout was just right.

Mark Hislop, Owner, Exale Brewing

We’ve found the knowledge and support of Horizon Seaweed to be first class. The products have been used successfully in our gins, with the first Coastal Edition winning gin of the year with the Craft Gin Club members in 2020.

Martin Murray, Founder, Dunnet Bay Distillery

I was keen on the idea of using seaweed for a plant-based foodservice product. There are lots of different types and the knowledgeable team at Horizon Seaweed were extremely helpful in guiding me towards the best solutions for my particular application.

Richard Fox, Plant-based chef, richardfox.tv

We have a long baking heritage and creating products of the highest quality is the key requirement for keeping our loyal customers happy. To that end, we have been delighted with everything we have sourced from Horizon Seaweed and use their ingredients in several of our products. The Horizon Seaweed team have been an absolute pleasure to deal with and we look forward to working with them in the years to come. We strongly recommend them and their fantastic range of products.

Donald Scott, Purchasing Manager, Stag Bakeries