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Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1, 18 Ounce

4.6 4.6 out of 5 stars 1,617 ratings

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Purchase options and add-ons

Brand Neptune's Harvest
Item Weight 1.13 Pounds
Item Form Liquid
Coverage Medium
Liquid Volume 18 Fluid Ounces

About this item

  • Grow a beautiful vegetable garden
  • Flowers and foliage will be stronger and more colorful
  • Blooms will be more plentiful, fragrant and longer lasting
  • Easy to mix and apply by hand, sprayer, or drip line

Additional Details

Small Business
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Customer ratings by feature

Value for money
4.2 4.2
Scent
2.7 2.7

Frequently bought together

$21.99 ($1.22/Fl Oz)
Get it as soon as Tuesday, Apr 2
In Stock
Sold by Boon Sales and ships from Amazon Fulfillment.
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$27.00 ($0.75/Fl Oz)
Get it as soon as Tuesday, Apr 2
In Stock
Sold by Buckeye Trading and ships from Amazon Fulfillment.
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$20.41
Get it as soon as Tuesday, Apr 2
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Sold by Hearthshire and ships from Amazon Fulfillment.
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Product Description

Neptune's Harvest Fertilizer is perfect for everything you grow! Our fish fertilizers are made from a variety of fresh caught North Atlantic fish which allows us to offer the best natural and organic products on the market!

fertilizer plant food natural organic fish seaweed safe tomato vegetable fruit lawn plant fertilizer plant food natural organic fish seaweed safe tomato vegetable fruit lawn plant fertilizer plant food natural organic fish seaweed safe tomato vegetable fruit lawn plant
Neptune's Harvest Fish Fertilizer Neptune's Harvest Fish & Seaweed Blend Fertilizer Neptune's Harvest Seaweed Plant Food
Customer Reviews
4.7 out of 5 stars
934
4.6 out of 5 stars
1,617
4.7 out of 5 stars
984
Dilution Rate 1:128 (1 oz per gal) 1:128 (1 oz per gal) 1:128 (1 oz per gal)
Outdoor Use Makes 16 Gallons Makes 16 Gallons Makes 16 Gallons
Indoor Use Makes 32 Gallons Makes 32 Gallons Makes 32 Gallons
Coverage ~ 1000 sq ft ~ 1000 sq ft ~ 1000 sq ft
Application Every 1-2 weeks Every 1-2 weeks Every 1-2 weeks
Benefits Perfect for everything you grow! Feed vegetables, flowers, trees, shrubs, lawn and more! Perfect for everything you grow! Feed vegetables, flowers, trees, shrubs, lawn and more! Made from Ascophyllum Nodosum that grows along the cold North Atlantic Ocean Floor
N-P-K 2-4-1 2-3-1 0-0-1
Intended Use House Plants, Vegetables, Flowers, Fruit, Trees, Lawns, and Containers House Plants, Vegetables, Flowers, Fruit, Trees, Lawns, and Containers House Plants, Vegetables, Flowers, Fruit, Trees, Lawns, and Containers
Sprayer Friendly
OMRI Listed

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Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1, 18 Ounce


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Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1, 18 Ounce
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Price$21.99$15.86$39.95-13% $47.77
List:$54.99
$53.00$21.00
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Value for money
4.2
4.4
4.5
4.4
4.5
4.3
Scent
2.7
3.7
3.3
3.8
3.8
Easy to use
4.8
4.7
4.6
4.8
4.7
Sold By
Boon Sales
Sebago Distribution
GS Plant Foods
Sebago Distribution
PSB Retail
Amazon.com
weight
1.13 pounds
1 pounds
128 ounces
4 pounds
8.8 pounds
1.13 pounds
form
Liquid
Liquid
Liquid
Powder
Liquid
Liquid
coverage
Medium
Medium
Medium
Medium
Full
Full
liquid volume
18 fluid ounces
18 fluid ounces
3.6 liters
3784 milliliters
1 gallons
18 fluid ounces
specific uses
Business
Plant Food
Lawns,Organic,Plant Food
Plant Growth
Soil Conditioning
Organic,Plant Food
target species
Fish & Seaweed
Fish
Fish
Fish
Fish

Important information

Ingredients

Nitrogen, Phosphorus, Potassium

Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,617 global ratings

Customers say

Customers like the performance, natural, and growth of the fertilizer. For example, they mention it works great for encouraging growth, and is a great organic way to feed your plants. That said, some are happy with ease of use. That being said, opinions are mixed on the smell and value.

AI-generated from the text of customer reviews

109 customers mention106 positive3 negative

Customers are satisfied with the performance of the fertilizer. They mention that it works great for encouraging growth, and is well worth the great results. Some say that it revives and improves all of their houseplants. Overall, customers are happy with the product's performance and recommend it to others.

"...Works great!..." Read more

"This is a product worth investing in! It works great for encouraging growth for plants and flowers...." Read more

"...This fertilizer has revived and improved ALL of my houseplants!..." Read more

"Great for plants. Smells fishy, but I knew that was the real thing. Beats burying a dead fish next to each plant!" Read more

59 customers mention59 positive0 negative

Customers find the natural fertilizer to be a great way to feed their plants. They say it makes their plants grow healthy without the terrible fishy smell. Customers also mention that it's the absolute best for their garden, and that it helps add nutrients to compost.

"...after pictures, because the amount of new growth and overall health of my plants is incredible...." Read more

"...Great fertilizer especially for younger plants." Read more

"...Spraying the leaves with this solution mixed in water, allows the plants to absorb nutrients through their leaves that they might be missing...." Read more

"...Very good for plants, and those who consume those plants, as it is organic and helps plants grow." Read more

45 customers mention45 positive0 negative

Customers are satisfied with the growth of their plants after using the Neptune fertilizer. They mention that their plants flourish and flower frequently. They also say that the compost is complete and better suited to grow great things. Customers also say the fertilizer makes plants grow like weeds, quick and big.

"Smells like ass, and makes my plants happy. Get some yourself!" Read more

"...They are so green and growing well. Can’t wait to see what my potatoes look like when I harvest them." Read more

"As soon as I started using this, my plants had new growth and are so happy! Would definitely recommend." Read more

"...Lots of new growth on the things I water it on" Read more

11 customers mention11 positive0 negative

Customers find the product easy to use. They mention it's simple to mix and apply, and easy to blend. Customers also appreciate the simplicity of the instructions. They say the product helps add nutrients, which breaks down the compost better.

"Simplicity is valuable but a little more clarity on instructions— stamped R on vertical support is a nice feature but never explained" Read more

"Easy to mix" Read more

"...Easy to apply with sprayer." Read more

"...It's not too overwhelming but at the same time I wouldn't use this indoors in an area that is frequented." Read more

116 customers mention38 positive78 negative

Customers are mixed about the smell of the seeds and plants. Some mention that the smell is not so bad on the bottle, while others say that it does smell nasty on their hands or clothes.

"...If you are going to be using it indoors, just be aware the smell is pretty terrible (smells like dead fish) but if you water your seedlings from the..." Read more

"...it’s diluted in water it’s more than bearable, and it does not make your plants smell bad after watering...." Read more

"...It works great for encouraging growth for plants and flowers. It is smelly but that's to be expected with fish fertilizer." Read more

"This definitely has a fishy/seaweed smell to it, but does the job. Great fertilizer especially for younger plants." Read more

16 customers mention11 positive5 negative

Customers are mixed about the value of the seeds and plants. Some mention that it's worth every dollar, worth investing in, and worth its weight in gold. However, others say that the price is not commensurate with what has been sold in the past.

"This is a product worth investing in! It works great for encouraging growth for plants and flowers...." Read more

"...It's cheap insurance and one of the top items I add to my gardening arsenal.It isn't the holy Grail of course...." Read more

"My Jalapeno's seem to be responding well to the fertilizer. Bit expensive but hopefully worth it in the end with pepper production...." Read more

"...Totally worth the money" Read more

11 customers mention0 positive11 negative

Customers are dissatisfied with the quality of the seeds and plants. They mention that the product spilled and ruined the entire shipment. The lid was broken and the contents were spille all out in the box. The packaging was sloppy and the product leaked out all over the plastic wrap. Customers also say that the seeds smell like animal waste and are disgusting.

"...If you get it on your hands or clothes it does smell nasty, like animal waste but as long as it goes where it belongs, so far my plants seem to love..." Read more

"...When I got the bottle it had leaked out all over the plastic it was wrapped in so maybe what was left in the bottle was too concentrated...." Read more

"...No safety seal, and about 1/4 of the product was gone. Disgusting, and now I smell like fish fertilizer despite trying to avoid touching it and..." Read more

"...seal, so by the time I received the shipment there was a mess all over the plastic wrap and inside the box...." Read more

If you want healthy plants and veggies this will help immensely!
5 Stars
If you want healthy plants and veggies this will help immensely!
I have been using the stuff for 3 years now. Excellent product for organic gardening. I highly recommend mixing some of this into chlorine free water and doing an early morning (Before sun gets too hot) or evening foliar feed or root drench of your plants or vegetables.Sometimes certain nutrients and minerals are locked into the soil making it difficult for the plants to absorb. Foliar feeding the leaves will circumvent this issue. Spraying the leaves with this solution mixed in water, allows the plants to absorb nutrients through their leaves that they might be missing. It's cheap insurance and one of the top items I add to my gardening arsenal.It isn't the holy Grail of course. I'm also a big fan of rock dust minerals, adding worm castings, compost, as well as using compost teas but after an application on the plants - this really perks them right up. Remember to root drench the plants with the mixture as well. Not too often or you will invite pests. No more than every 7-10 days imo. The only con... it definitely has a strong fish odor but for results, I highly recommend this product.UPDATE: Spring 2022. I just wanted to give a quick update that I still use and recommend this product and will continue to do so.UPDATE: Fall 2023. I still feel this is a great product however, with that said... be careful of use.It might be the atrocious hot weather here but have experienced significant aphid outbreaks after use on my garden vegetables. I have since stopped using this product on all annuals but am still utilizing it on my bananas and citrus every 4 - 6 weeks.
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5.0 out of 5 stars If you want healthy plants and veggies this will help immensely!
Reviewed in the United States on June 19, 2018
I have been using the stuff for 3 years now. Excellent product for organic gardening. I highly recommend mixing some of this into chlorine free water and doing an early morning (Before sun gets too hot) or evening foliar feed or root drench of your plants or vegetables.

Sometimes certain nutrients and minerals are locked into the soil making it difficult for the plants to absorb. Foliar feeding the leaves will circumvent this issue. Spraying the leaves with this solution mixed in water, allows the plants to absorb nutrients through their leaves that they might be missing. It's cheap insurance and one of the top items I add to my gardening arsenal.

It isn't the holy Grail of course. I'm also a big fan of rock dust minerals, adding worm castings, compost, as well as using compost teas but after an application on the plants - this really perks them right up. Remember to root drench the plants with the mixture as well. Not too often or you will invite pests. No more than every 7-10 days imo. The only con... it definitely has a strong fish odor but for results, I highly recommend this product.

UPDATE: Spring 2022. I just wanted to give a quick update that I still use and recommend this product and will continue to do so.

UPDATE: Fall 2023. I still feel this is a great product however, with that said... be careful of use.

It might be the atrocious hot weather here but have experienced significant aphid outbreaks after use on my garden vegetables. I have since stopped using this product on all annuals but am still utilizing it on my bananas and citrus every 4 - 6 weeks.
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