A seaweed farm three miles off the coast at Morston is set to plant its first crop as part of a trial to see if the resource can be grown commercially.
Norfolk Seaweed has been given a licence to grow sugar kelp on a 150 x 60m area of seabed, in around 30ft of water.
The aquatic plants can be used to make fertiliser, animal feeds and bioplastics and the Norfolk project - the first of its kind in UK waters - is intended to establish how such farms could be developed on a much larger scale off the British coast.
Norfolk Seaweed has harvested kelp from the Lincolnshire coast, from which spores have been cultivated in a Dutch laboratory.
The tiny plants attach themselves to twine, which will be wound around thicker ropes before being anchored to the seabed.
Jamie Athill, one of the firm's directors, said the first trial batch of kelp would be planted later this month, while the fast-growing fronds will be ready to harvest next spring.
"By March we will know if we're a goer," said Mr Athill, 68, a retired army colonel and deputy lieutenant of Norfolk.
"We will then be able to predict what the yield from a full commercially-sized kelp farm might be.
"We are pretty confident it should grow well here because it grows well on the coast of the Netherlands, which is a similar sort of sea."
A report last year said Norfolk's 90-mile coastline could develop a new sustainable industry.
It said: "Developing a seaweed industry and taking advantage of the growing market is a great opportunity for Norfolk, with several local companies already using or wanting to use seaweed in food, sustainable plastic packaging, and antimicrobial products."
As well as providing a new natural resource, the kelp will also create a habitat for fish and other marine creatures as it grows.
It also filters sea water and helps combat the effects of storms and coastal erosion.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here