Featured products
Northern Algae’s biostimulant is a natural plant food and stimulant derived from growing green microalgae locally,
providing a natural and sustainable source of bioavailable nutrients. It is
rich in nutrients such as proteins, polysaccharides and lipids, which
contribute to improved plant nutrition and soil health.
NPK & Nutrient Profile
Our organic microalgae plant food delivers nitrogen, phosphorus and potassium in natural, bioavailable forms — alongside proteins, amino acids and essential metabolites that support robust plant health and soil biology. Far more than a simple fertiliser.
Sustainability through Carbon Capture
Dedicated to sustainable growth, we harness the power of nature for thriving ecosystems. Our mission blends innovation with environmental stewardship, offering solutions that nurture life. Our microalgae capture carbon naturally as they grow contributing to reducing your carbon footprint as you garden.
Latest from our blog
How to Keep Your Houseplants Alive in a UK Heatwave
The UK doesn't do heatwaves by halves. When temperatures hit the high twenties and stay there, homes that are perfectly comfortable most of the year become difficult environments for tropical...
How to Keep Your Houseplants Alive in a UK Heatwave
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|Simon Admin
Cottagecore Gardening: The Trend With Genuine Roots
If your social feeds have been full of wildflowers, tumbling herb beds, and baskets piled with vegetables and blooms, you've been watching cottagecore. It's one of the most searched garden...
Cottagecore Gardening: The Trend With Genuine Roots
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|Simon Admin
From Dead Rose to Flying High — A Customer's Northern Algae Story
Beth used Northern Algae to revive a dying rose, boost late-planted veggies to germination in 4 days, and is already planning to use it on new turf. A brilliant real-world...
From Dead Rose to Flying High — A Customer's Northern Algae Story
From Dead Rose to Flying High — A Customer's Northern Algae Story
|Simon Admin
Crafted from nature's essence, our microalgae formula promotes robust growth and resilience.
About Northern Algae
Born from Science. Grown for Your Garden.
Our Story
Northern Algae was founded by Mark and Simon — two engineers (building services and environmental) from the North East of England with a background in delivering R&D projects for the Royal Air Force. Working on carbon capture technology, they discovered that microalgae was the most powerful, versatile and environmentally friendly solution available — capable of absorbing up to 50x more CO₂ than trees.
Mark, a passionate gardener and allotment holder in North Tyneside, saw the potential immediately. If microalgae could capture carbon at that scale, what could it do for plants? The answer was extraordinary.
From RAF R&D projects to your garden — Northern Algae was born.
What We Make
Our 100% natural, organic microalgae plant nutrition is made right here in the UK. No synthetic chemicals. No artificial additives. Just the concentrated power of nature, sustainably grown using only sunlight, water and CO₂.
Simple to use: mix and feed every fortnight. Pet safe. Vegan friendly. Proven on everything from Christmas trees to potato plants, lawns to grapevines, poinsettias to dahlias.
What Our Customers Say
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Both my indoor and outdoor plants are flourishing. After searching for a sustainable alternative to conventional plant food, this option has exceeded my expectations. A win-win for my garden and the planet.
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Used twice on the lawn and already a noticeable difference. It has given the lawn a good boost. More than happy.
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Blooming marvellous! Bought this plant at a local garden centre and still in full bloom in December with a little drop of feed every month. Fabulous product!
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Last year's Christmas trees are doing so well on this.
The Science Behind It
Microalgae delivers proteins, polysaccharides and lipids directly to your plants — boosting root health, improving soil structure and accelerating nutrient uptake. Every bottle supports an active carbon-capturing process working every day to pull CO₂ from the air and release fresh oxygen.
Good for your plants. Good for the planet.
Our Promise
We're a small, independent business with a big mission: to make natural, effective plant nutrition accessible to every gardener in the UK — while actively helping the environment. When you choose Northern Algae, you're choosing science-backed, planet-friendly plant care with proven results.
What Our Customers Say
"If you like gardening, plants, growing your own veggies, or are very good at killing plants then this is some good stuff! I had a lovely Rose which I moved, and it died, I added some last chance saloon Northern Algae Ltd and a week later she wasn't just showing signs of life, she was flying! We've been doing garden renovations and so my veggies were planted wayyyy later than I should have! A little boost when I planted the seeds and we had germination in 4 days!! Everything is shooting up and it's looking so healthy :) We have new turf going down soon, and I'll be using it again then. Safe to say I was pleased when I bought another 5 litres"
"Both my indoor and outdoor plants are flourishing. After searching for a sustainable alternative to conventional plant food, this option has exceeded my expectations. A win-win for my garden and the planet."
"Used twice on the lawn and already a noticeable difference. It has given the lawn a good boost. More than happy."
"Blooming marvellous! Bought this plant at a local garden centre and still in full bloom in December with a little drop of feed every month. Fabulous product!"
"Last year's Christmas trees are doing so well on this."