Regenerative Farming with the Tide

Growing a Sustainable
Future with Kelp

We grow kelp in working harbours to enhance marine ecosystems, support regenerative agriculture, and build a thriving blue economy along the UK coast.

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Red kelp-line buoys floating in a Plymouth harbour

Our Mission

Healthy Oceans. Healthy Land. Healthy Communities.

Harbour Farming: We repurpose working harbour moorings over winter to grow kelp — no new infrastructure, no disruption to harbour life.

Marine Enhancement: As kelp grows, it naturally filters the water, sequesters carbon, and creates habitat for marine species.

Closed-Loop Processing: Harvested kelp is processed into biostimulants and natural extracts, returning nutrients back to land through regenerative agriculture.

Find Out More

Sea to Soil

A Superfood for Plants

100%

Natural & Renewable

Synthetic Chemicals

∞

Regenerative Potential

Steeped in Tradition

Coastal farmers have long used storm-cast seaweed to nourish their soils — a natural fertiliser rich in minerals that sustained crops and communities for generations.

The Hidden Cost

Synthetic fertilisers boosted yields but degraded soils, depleted ecosystems and polluted waterways. The need for regenerative alternatives has never been more urgent.

Kelp Today

Sustainably farmed kelp is processed into biostimulants that deliver its regenerative power to farms anywhere — building healthier soils, stronger crops and a more resilient future.

Powerful Bioactivity

Seaweed biostimulants are packed with bioactive compounds — laminarin, fucoidan, alginates, mannitol, amino acids, trace minerals, antioxidants and natural signalling molecules.

Real Results

Our carefully processed kelp juice biostimulants boost root growth, nutrient and water uptake, soil microbial activity and plant defences — helping crops withstand drought, heat, salinity, transplant shock and disease.

Our Impact

Pilot Farm 2026 Results

Measured outcomes from our Plymouth Pilot Study — proving that working harbours can grow climate-positive kelp at scale.

Freshly harvested kelp lines being lifted from a Plymouth harbour aboard the BluGreens vessel

4installations

80m × 3m footprint each

8moorings

Repurposed for the season

2,208m

Grow line deployed

15,000kg

Kelp grown

6.8kg/m

Yield per metre

478kg

Carbon captured

1,750kg

CO₂ sequestered

99kg

Nitrate removed

6.7kg

Phosphorus removed

Our Products

Shop BluGreens

Products crafted from sustainably farmed kelp to benefit both you and the planet.

Best Seller

Kelpful Biostimulant

Our flagship seaweed-based biostimulant, crafted to promote plant growth and restore soil health using sustainably farmed kelp.

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Eco Wellness

Seaweed Bath Bag

Soak in the ocean's goodness. Our bath bags are filled with dried seaweed — a nourishing, mineral-rich experience for body and mind.

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Coming Soon

Superfood for Plants

Harvested and processed within hours of leaving the water, helping retain the full spectrum of naturally occurring marine bioactives. Complete kelp. Clean. Odour-free. The kind of thing that makes your plants stop, sit-up, and pay attention.

Plant Growth BoosterRich in MineralsZero WasteSustainably Farmed

Be first to know when Kelp Juice launches

@blugreens_uk