Delivery Information
About Us
Contact Us
Live Chat:
Prefer To Call? 01788 298 795
  • The best liquid seaweed feed and soil conditioner
  • The best liquid seaweed feed and soil conditioner label
  • The best liquid seaweed feed and soil conditioner irish approved organic
  • The best liquid seaweed feed and soil conditioner in garden

Irish Organic Seaweed Soil Conditioner and Plant Tonic. 2.5 litre.


In a nutshell....

The Irish Organic Seaweed Soil Conditioner and Plant Tonic. 2.5 litre is from seaweed sustainably harvested off the west coast of Ireland from the North Atlantic Ocean.

Add to Cart

Seaweed Fertiliser Is Mineral Rich & Conditions Your Soil

Organic seaweed fertiliser from Sea Nymph is ideal as a soil conditioner and plant tonic for organically grown fruit, vegetables and flowers. Provides extensive Trace elements. Conditions soil and stimulates plant growth.

This stuff is the business. Why? It is produced from seaweed sustainably harvested off the west coast of Ireland. Other seaweed feeds available on the market are produced from a powdered raw material. Our "Sea Nymph' liquid is produced from hand harvested Ascophyllum nodosum, a seaweed species exclusive to the North Atlantic Ocean. Harvesting by hand ensures quick plant recovery and causes minimal disruption to the natural habitat. It also produces a far more potent raw material which gives this product its extra punch.

The base extract is mixed with additional NPK and complexed minerals to tailor the range to specific needs throughout the year. Complexing of the minerals helps ensure they work for longer when applied as the complexing acts as a slow releasing agent giving longer performance to the minerals.

In short it's the best liquid seaweed you can get. Apply February to October.

Why use seaweed feed?

Seaweed contains the major plant nutrients but also a whole range of micro nutrients often absent in old and tired soil. Will also promote root growth and stimulate microbial soil life which makes more nutrients available to your plants. Seaweed fertiliser feeds will also strengthen the plants immune system helping to fight off bacterial and fungal attack.

The difference between our seaweed fertiliser feed and many others on the market is most other seaweed tonics use a powdered raw material which is diluted to produce the finished liquid. Our Soil Conditioner and Plant Tonic is made the old fashioned way, it's hand harvested in the unspoilt waters of the West coast of Ireland with the fresh seaweed going directly into the production process.

How is Sea Nymph made?

The sustainably harvested seaweed is first washed to remove any loose sand and shells. The seaweed is then places in stainless steel vats where the extraction process takes place. The idea is to break down the cell walls to release the broad range of nutrients unique to seaweed. Minerals, vitamins, amino acids and saccharides (sugar molecules) are first extracted and then cold filtered to remove any insoluble particles. The filtered end product is then bottled for use in your vegetable garden. In short it's the best liquid seaweed fertiliser soil tonic you can get. Apply February to October.

Contents: 2.5 Litres Concentrated, makes 45 litres or roughly 1/20 when mixing. As a guide a 5litre watering can will cover 2 x raised beds 6ft x 4ft.

Write a Review
May 29th, 2019
This is the best seaweed conditioner I have used. I use it on everything including tomatoes, fruit trees, cucumbers and everything else in my greenhouse, also raspberries and many other fruiting and ornamental plants. Of particular note is a tree the county council planted outside my house (Mountain Ash called Joseph Rock) The county council removed a large Sycamore tree whose roots were lifting up the pavement and cracking garden walls. The county council used a stump grinder and planted the mountain ash on top of the stump then covered the roots with some rock hard lumps of clay. The poor mountain ash had hardly any roots (Bare Rooted planting) I was present and witnessed the whole thing. It was also planted in March 2018 before one of the hottest and driest summers on record. This tree was doomed without my assistance. I watered the poor mountain ash several times a week and fed seaweed feed and also the tomato feed version of the seaweed feed available from Quickcrop as well. I als
Diana Meliciano
February 10th, 2018
Absolutely great aid for my plants. I use it every 2 weeks during the growing season, to keep them growing healthily. It is also easy to apply since it can go into any plant type.
October 27th, 2017
Excellent product with great results
March 31st, 2017
excellent fast service .quality product [seaweed ]
Lorcan O Keefe
May 31st, 2016
i used this and my soil seems a lot better than it used to be. good to see an irish company selling irish products.
Ellen Manning
April 09th, 2016
My soil and my vegetables both adore this Seaweed tonic. I have been using the 500ml size all summer and I still have some left so great value for money and wonderful for growning vegetables and fruit. I live in an urban area and have no choice but to grown a lot of my vegetables in containers but a weekly feed of this liquid seaweed tonic has really been a boost to the yield I am getting - my french beans in particular seem to produce a lot more and I used it instead of standard tomato food on my tomatoes this year and am still harvesting ripe tomatoes here in mid October in Ireland. I will order the larger size bottle when I eventually run out (It lasts forever). Thanks Quickcrop.
Ask a Question
Asked By Dan
on December 30th, 2016
Hello, I was hoping to buy some of this feed but was wondering if you could give me some more details about the NPK content; it's hard to track down the information on the web. many thanks
Answered by Andrew
on January 03rd, 2017
Hi Dan. Liquid seaweed is more of a plant tonic rather than a liquid fertilizer so N.P.K. isn't really applicable (it would be pretty low), this is why it is difficult to find info on it. The benefit of the seaweed is more in trace elements, amino acids and growth hormones. If you are growing tomatoes, for example we have a version with added NPK which is higher in potassium so it depends what you are using it for. I hope this helps! Andrew

All UK Standard Deliveries only £3.95, heavy orders only £9.95.

All our UK deliveries are only £3.95 no matter how many products we deliver anywhere in mainland UK. For heavy items like ponds or garden furniture we charge only £9.95 per complete order. We also deliver to other countries in Europe, please see our rates below.

Our delivery fee is an absolute bargain and is far cheaper than any of our competitors, please take this into account when comparing product prices.


Quickcrop vegetable growers website delivery hubQuickcrop Deliveries

Heavy goods deliveries
For heavy pond or garden furniture deliveries we charge an extra £4.00 to our standard delivery rate. Our rates below are our standard rates, please add £4.00 for heavy goods. All delivery rates are automatically added to your order when you add a product to your cart.

Where do we deliver to?
We deliver nationwide to the UK, the island of Ireland, Austria, Benelux Countries, Czech Republic, Denmark, Finland, France, Germany, Hungary, Italy, Norway, Poland, Portugal, Spain, Slovakia, Slovenia, Sweden and Switzerland. Please see our delivery rates below:

£3.95 - The United Kingdom and Island of Ireland (Highlands and Islands may incur a surcharge, please contact us on 0044 1788 298 795 for details)

£9.95 - Austria, Belguim, The Netherlands, Luxembourg, Denmark, France, Germany, Switzerland.

£19.95 - Czech Republic, Hungary, Italy, Poland, Slovakia, Slovenia, Sweden.

£24.95 - Finland, Norway, Portugal, Spain.


How long does delivery take?
Stock permitting we aim to dispatch your goods within 1 - 2 working days of receiving your order. The average time taken from order to delivery is 3 - 4 days in the UK and Ireland, and up to 6/7 working days for France, Germany and the Benelux countries.

Can I track the parcel myself?
When the order has been dispatched we will provide you with a tracking number for your shipment, you will be able to log on to the relevant couriers website and see where your parcel is at any time. You can also call the office on 01788 298 795 or email if you need more information.

What If I'm not in at time of delivery?
The driver will leave a note with the depot contact number. Delivery can be arranged for the next day or a later date. The driver will not leave the parcel without a signature however they can leave your parcel with a neighbour if instructed to do so in our notes section at the checkout stage on the website. If your order is for Raised beds or Ponds it will be delivered by Tuffnells carriers and they do not require a signature for the delivery. They will leave your order in a safe place and put a note in your door telling you where it is (typically down the side of the house or around the back)

I'm ordering several items, do they all arrive at the same time?
All items dispatched at the same time will normally be delivered in one delivery. The exceptions are bulk bags of soil or compost which comes in a separate delivery using a different delivery company.

What if my parcel is damaged or I wish to return the goods I have ordered?
Contact our office on 01788 298 795 and we will arrange collection and refund or replacement of faulty or damaged goods free of charge. We have a 'no quibble' policy on damages and will replace immediately once we receive an emailed photo of the damaged item.

If you wish to return an undamaged item for any reason we do charge a collection fee which may vary depending on the number of parcels, each case is different so please call us to arrange. We promise to keep returns fees fair and as low as possible. To arrange a return please contact our sales team on 01788 298 795

Quickcrop Returns Policy

Great customer service is what we are all about. You will never have to worry about damages, the item not being as expected or simply deciding you don’t want the item and you wish to return it. If you've changed your mind about your purchase, please return it in its original condition with proof of purchase within 35 days of receiving your order and we'll exchange or refund it. We will also refund the standard delivery charge, provided you return the full order. If you're only returning some of the items on your order, then we will only refund the cost of those items. We do not cover the cost of returning the item to our warehouse.

Please note that the goods must be returned in the same condition that they left us so if you have opened your parcel you must ensure it is well enough packed to make it back to us undamaged.

Damaged Goods Returns
If the parcel is visibly damaged upon delivery, Do Not Sign for the Order. After that just email us on and we will do the rest. Obviously it is not always possible to spot a damage in that moment of delivery so don’t worry. As soon as you open your parcel if the goods are not as they should be just email us a photo of the issue clearly explaining the problem. We will be back to you within the day with a solution. This is normally to arrange a collection at a time that suits you and arrange for a replacement to be sent out. We have very few damages so we act very quickly. Please note the Photo is important so that we can claim off our couriers.

A Simple Return
So you have decided on receipt of the goods that you simple don’t want them. Again simple. Just email us at explaining that we want to return your goods clearly stating your name and your order number. We will arrange for collection on an agreed day. Once the goods arrive back in our warehouse and they have been checked as in the condition they left us we will refund you less 15% of the product value. We won’t even charge you for the collection. Now it doesn’t get any better than that.

European Returns
Customers outside of the UK and Ireland are covered by the damages Returns policy above. If you want to return your goods due to the fact that you no longer want it you simply email us on and let us know. You will then need to return your goods to the following address and once it arrives back to us in the condition it left us we will refund you less the 15% restocking charge.

The address for European Returns is:
Quickcrop Ltd – Unit 13 Block A, Flurrybridge Business Park, Lower Foughill Road, Newry, Northern Ireland BT358SQ

Independent quickcrop reviews
Irish Organic Seaweed Soil Conditioner and Plant Tonic. 2.5 litre.
Your Rating:
Your Comments:

The most useful reviews contain specific comments about:

  • How to use the product
  • Things that you like about it
  • Things you don't like about it

Please do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory or copyrighted comments.

If you are unhappy with any of our products or sevices we want to do something to help. Fill in this field and we will contact you to sort out any issues you may have.

Submit Review
Irish Organic Seaweed Soil Conditioner and Plant Tonic. 2.5 litre.
Your Question:

Please do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory or copyrighted comments.

If you are unhappy with any of our products or sevices we want to do something to help. Fill in this field and we will contact you to sort out any issues you may have.

Ask Question