Liquid seaweed fertilizer

earthworm73(WA z8)April 29, 2009

This morning I found a bottle of Neptune Harvest Fish and Seaweed extract at my local grocery store's nursery section. Of course I bought it. Can anyone share their experience with using seaweed products in their garden? I looked at the photos on their website and while I am impressed I am always wary of self promotion.

Thank you for reporting this comment. Undo
llaz(z6 ma)

I have used it for many seasons and I think it works well. The company is not far from where I live, so I originally bought it to support a local business. Now it's part of my routine. I use it diluted when starting from seed and in the holes when I transplant seedlings and latter as side dressing. Using things from the sea to enrich gardens has a long history here in coastal Massachusetts and this company was just enterprising enough to bottle it.

    Bookmark   April 29, 2009 at 8:03PM
Thank you for reporting this comment. Undo
joejarvis(USDA-5b AHS-7 KS)

But oh how it smells.

    Bookmark   April 30, 2009 at 12:51AM
Thank you for reporting this comment. Undo

Yes, it does smell when I use it on my seedlings indoors! But I mostly use it outside in the garden every 2 weeks (1/4 - 1/2 cup to 2 gallon watering can) as a fertilizer. It's the only fertilizer I use during the growing season and I get loads of happy healthy vegetables. You can also use it as a foliar spray and as an added bonus it keeps the deer from eating!

    Bookmark   April 30, 2009 at 1:36PM
Thank you for reporting this comment. Undo
jimster(z7a MA)

If someone has a supply of seaweed, can they make their own liquid fertilizer? How?

Or is it best to just apply the seaweed directly to the garden? Or compost it?

There are many kinds of seaweed. Are all of them good for fertilizer or just certain kinds?

Too many questions?


    Bookmark   April 30, 2009 at 2:10PM
Thank you for reporting this comment. Undo
lisazone6_ma(z6 MA)

I've used this stuff for years - I swear by it! The first year I used it I swear I got the biggest harvest of tomatoes I've ever gotten. My plants were HUGE.

It do stink tho! :)


    Bookmark   April 30, 2009 at 2:16PM
Thank you for reporting this comment. Undo

The high P content leads me to believe there might be ground up shellfish in this, too.

It's pretty balanced (and expensive, as par) for an organic fertilizer.

    Bookmark   April 30, 2009 at 3:29PM
Thank you for reporting this comment. Undo
earthworm73(WA z8)

Yesterday my tomatoes appeared stressed because they needed to be watered. After being outide for a few hours hardening off I brought them inside and watered with the fish/seaweed solution. I put them back under the growlights and I left for work. This morning when I return home from work I checked on them and OMG they really really perked up! Plus I swear they grew half inch to an inch in just 12 hours! I'm not kiddin. I had never seen them this perky. I can't wait to use them on my other veggies and lawn. Those testimonials on their website must be true.

    Bookmark   April 30, 2009 at 5:14PM
Thank you for reporting this comment. Undo

Well don't get carried away. It's just pricey fertilizer.

You can get the same effects synthetically and with the addition of an enzyme/bacteria/etc. supplement for far cheaper.

Still, the stuff is good soil charger and a decent organic fertilizer.

    Bookmark   April 30, 2009 at 5:52PM
Thank you for reporting this comment. Undo

where do they get "SEAWEED FERTILIZER"?
From seaweed I think!

What if you just to make your own? here is how(just a suggestion):
If there are any Asiam grocery/maket near you, buy some of the cheapest seaweed, grind it in your coffee mill, Voilla!
Either work it into soil or soak it and then apply.

Any comments?

I am going to Farmers Market.

Talk to you later(hehe)

    Bookmark   April 30, 2009 at 8:07PM
Thank you for reporting this comment. Undo
roper2008 (7b)(7b)

I use Neptune's fish and seaweed. You can order
directly from the company on the internet. I bought
a 5 gallon bucket last spring. If your garden is
fairly big, it's cheaper that way. I'm still using
the same 5 gallons this summer, maybe even next summer.

    Bookmark   April 30, 2009 at 8:20PM
Thank you for reporting this comment. Undo
earthworm73(WA z8)

roper,what were your results after use?

    Bookmark   April 30, 2009 at 9:13PM
Thank you for reporting this comment. Undo

As I said in my previous post, I went to an Asian market and found the least expensive seaweed, $$/Lb.
I bought a package of 2.2 lbs for 10 bucks.
I came back and ground about half a pound in my coffee mill.
I really powdered it. I also cooked some for dinner.It was OK. But I am going to use it as fertilizer, so taste and food quality does not matter.

I wonder How much a 5 gal of the Neptun stuff costs and
what are the NPK numbers. Or better yet, does anybody know what are general nutrient characteristics of seaweed?

Anyway, I am stuck with ten bucks of worth dried seaweed anyway.

    Bookmark   April 30, 2009 at 10:09PM
Thank you for reporting this comment. Undo

I wonder How much a 5 gal of the Neptun stuff costs and
what are the NPK numbers.

In the case of their seaweed only product it is 0-0-1. Seaweed generally isn't used as a fertilizer. It's more about the other stuff in it that may or may not be of any benefit to the soil/plants.

    Bookmark   April 30, 2009 at 10:27PM
Thank you for reporting this comment. Undo
roper2008 (7b)(7b)

My tomato plants did wonderful, hardly any blight. The only
problem was some kind of critter was eating some of them.
I really like Neptune's harvest and It's organic. The 5 gal. bucket
cost $125.50 shipping and handling included.

    Bookmark   April 30, 2009 at 10:33PM
Thank you for reporting this comment. Undo

I've never used store bought liquid seaweed fertilizer but have been using the real stuff for years up at the cabin. We clear out lots of seaweed every spring from our shoreline. I pile it up and it let it dry out a bit and then spread between my plants. It then decomposes over the summer into the soil. Once it's dry there is no real odor to speak of. There's usually a pile remaining so I let it sit there all summer and through winter. By spring I have some real nice mulch/soil admendment to dig into my gardens. I bring it home and till it into the veggie garden.

I'm going to have to make some liquid tea out of the fresh stuff this spring!

    Bookmark   May 1, 2009 at 8:15AM
Thank you for reporting this comment. Undo

jimster I use seaweed as is--In the compost, as a layer in the lasagna beds and in the garden. I just rinse it to get some of the salt off first. If you use it in the compost or as a layer in the lasagna garden make it a thin layer and cover it with another layer so it won't dry out or get slimey. If you put it in the garden, again use a thin layer and turn it under.

2 problems: Don't let it sit over night if you have deer as they will eat it. MY brother covered his garden without washing it or turning it under and it was gone in the morning. Lots of hoof prints. We figured it was the salt.

Check to see the laws in your area for harvesting. Here we are only allowed: 50 lbs per person, per day, or we have to get a license. We can only have the loose stuff or if it is attached to the rock we have to leave x amount of inches attached.

As I understand it seaweed contains several useful plant nutrients, including nitrogen, potassium, phosphate and magnesium. Also it is a good amendment to the soil similar to manure.

I can tell you that all the different patches of our gardens that got the seaweed last year produced very well.

As I understand it different varieties of seaweed contain different nutrients. I thought about making my own liquid fertilizer last year. I changed my mind after some study. It seemed like a better use of it to get both the nutrients and the soil improvement by using the whole thing.

    Bookmark   May 1, 2009 at 9:38AM
Thank you for reporting this comment. Undo

I live at the beach and it washes up on the beach at high tide. I can pick up all I want. I use it mainly for trace minerals and mix with compost. I noticed yesterday that there were several varieties of seaweed I haven't seen before.-

    Bookmark   May 1, 2009 at 10:52AM
Sign Up to comment
More Discussions
Building a database - help!
I'm an old geezer trying to learn Libreoffice Base...
Pole Beans in my area Milwaukee, Wisconsin
Hi everyone! Last season, (I think it was not til around...
Tomato plants for zone 7, 4-5 hours full sun
Hi, I live in Baltimore and am looking for recommendations...
lining bottom of raised bed for tomatoes
I keep reading advise about lining the bottom of raised...
Annual Fall Horseradish Project
Here is a photo journal of my annual fall horseradish...
Sponsored Products
USA 7.5-Oz. Original Disposable Flask - Set of Six
$10.99 | zulily
Ivory Daisy Splendor Round Doily - Set of Four
$11.99 | zulily
Thermocast Kitchen Wellington Drop-in Acrylic 25x22x9 3-Hole Single Bowl
Home Depot
Thermocast Kitchen Inverness Drop-in Acrylic 25x22x9 5-Hole Single Bowl Kitchen
Home Depot
Thermocast Kitchen Seabrook Drop-in Acrylic 33x22x9 5-Hole Double Bowl Kitchen
Home Depot
Thermocast Kitchen Manchester Drop-in Acrylic 16x16x7 3-Hole Single Bowl
$96.80 | Home Depot
Clear Fruit Infusion Flavor Carafe
$13.99 | zulily
Red & White Salad Spinner
$8.99 | zulily
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™