
Organic Seaweed Fertiliser – Proven by Growers, Backed by Science.
100% Organic, OF&G Certified, Made in the UK. Packed with nutrients to boost growth, strengthen roots, and revitalise your garden – all without chemicals.
Trusted by Growers. Certified by Experts
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OF&G Organic Certified
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Made in Britain
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180+ 5-Star eBay Reviews
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Pet & Child Safe

One Product. Endless Growth.
Our cold-processed organic seaweed fertiliser is packed with plant-boosting nutrients, trace minerals and natural growth hormones.
Whether you’re feeding veg patches, lawns, or flower beds - this one bottle does it all.
Certified by OF&G, made in the UK, and trusted by over 180 happy customers.
- Boosts growth in days
- Improves root development
- Builds resistance to drought, pests & disease
- Safe for edible plants, pets, and children
- 100% Organic & Sustainable
Simple to Use. Powerful Results.
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Step 1: Dilute with Water
Mix the fertiliser with water according to the label — just a capful goes a long way.
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Step 2: Apply to Soil or Leaves
Water your garden as usual — or spray directly onto the foliage for even faster absorption.
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Step 3: Watch Your Garden Thrive
Stronger roots, richer soil, faster growth. Use every 10–14 days for best results.
Oceanic Organic
Organic Seaweed Fertiliser
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Why Seaweed Works So Well
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Natural Plant Stimulants
Contains powerful bioactive compounds that encourage healthy, rapid plant growth.
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Nutrient-Rich Formula
Packed with essential minerals like nitrogen, potassium, magnesium, iron, and more — straight from the sea.
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Improves Soil & Root Health
Supports better root structure, nutrient uptake, and resilience in poor or stressed soils.
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Organic & Safe for All Gardens
Certified organic, chemical-free, and safe for edible plants, pets, and children. Scientifically proven.
Real Results from Real Growers, with 180+ 5* Reviews on eBay!
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"This company went above and beyond to sort out a problem with delivery, they answered me quickly and followed up to ensure I'd received the goods. I will definitely use them again."
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"Shaken up well and ready to mix, this looks like some of the good stuff, not thin and watery like some of the stuff sold on here. Genuinely certified as 100% organic (check the OF&G web site listings) and as such very reasonably priced. Time will tell soon enough but super fast shipping from the seller and an equally fast response to comms. All looking good so far - many thanks"
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"Excellent product that really works at bargain price. Very helpful communication,highly recommended. Huge 'Thank you"
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"Brilliant highly recommend this product, ordered 5lts it came in two 2.5lt which made it so much easier 4 me 2 lift, thank you. So easy 2 use, makes all the difference 2 your flowers, fruit, veg."
Get in touch if you have anymore questions about our product
Frequently Asked Questions
Is it safe for edible plants and vegetables?
Yes — it’s 100% organic and certified by OF&G. Perfect for use on food crops, flowers, lawns, and more.
Can I use it in greenhouses or containers?
Absolutely. It works just as well in pots, raised beds, and greenhouses as it does in open soil.
How often should I apply it?
We recommend using every 10–14 days during the growing season for best results.
How long does a bottle last?
1L covers up to 100 litres of watering. How long it lasts depends on how large your growing area is, but a little goes a long way.
Is it safe for pets and children?
Yes — once diluted and applied, it’s safe for use around pets and children.
Where is it made?
Proudly made in the UK with sustainably sourced seaweed and eco-friendly practices.

Join hundreds of UK gardeners choosing Oceanic Organic - the safe, certified way to strengthen roots, boost growth, and revitalise your soil.
From just £11.99 - with free UK shipping on orders over £20.