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Best Organic Fertilizers 2020 – Buyer’s Guide

by Tom Rice | Last Updated: June 3, 2020

Best Organic FertilizersDo you have plants around your home that you use for food, or just for decoration? If so, you’re probably aware of the proper care that must be given to them, so that they can blossom and bear fruit.

Gardening is work that can be either hard or easy, but much of that depends on the beginning steps that are undertaken before the plants begin to sprout up.

Below are ten organic fertilizers that aid in fast plant growth and health. They contain no artificial ingredients, no genetically modified organisms (GMOs), and are certified by the Organic Materials Review Institute (ORMI).

When you’re finished, don’t forget to look at the Buyer’s Guide and Conclusion for tips on how to choose, and the top two choices from the list.

BEST CHOICE

Unco Industries WWSB15LB review

Unco Industries (WWSB15LB)
Best Organic Fertilizers in Our Rating

  • The material has been sifted through prior to packaging
  • There are no seeds within the soil builder, which reduces the chances of weeds growin
  • Water stays in the soil longer, lowering the number of times that manual watering will need to be done
  • Universal volume

Read Verified Customer Reviews

Selecting the Best Organic Fertilizers in April, 2021

ProductDimensionsWeightBrand 
Unco Industries
(Editor’s Choice)


14 x 8 x 4 inches


15 pounds


Unco Industries


Check Price
EarthPods Premium

2.6 x 2.6 x 2.8 inches


2.4 ounces


Earthworm Technologies


Check Price
Jobe’s Organics 9026
(Editor’s Choice)


6 x 2 x 9 inches


4 pounds


Jobe's Organics


Check Price
Neptune's Harvest

4 x 4 x 9 inches


2.25 pounds


Neptune's Harvest


Check Price
Dr. Earth Organic

3 x 8 x 10 inches


3.3 pounds


Dr. Earth


Check Price
Plant Magic Plant Food

8.4 x 6 x 1 inches


8 ounces


Organic Plant Magic


Check Price
VermisTerra - Standard

10 x 4 x 12 inches


10 pounds


VermisTerra


Check Price
Root Naturally

9 x 2 x 6 inches


2 pounds


Root Naturally


Check Price
Liquid Kelp Seaweed

7 x 4 x 11 inches


8 pounds


GS Plant Foods


Check Price
SEA-90 Organic Fertilizer

6 x 5.4 x 3.6 inches


5 pounds


SEA-90


Check Price

1. Unco Industries (WWSB15LB) : Best Organic Fertilizer For Indoor and Outdoors (Editor’s Choice)

Unco Industries (WWSB15LB) ReviewThe Unco Industries Wiggle Worm Soil Builder comes in a tough plastic bag without a seal. If you plan on storing it for some time, you could put it in a separate container to keep the moisture inside. The ingredients are mostly earthworm castings or vermicompost.

They have lots of healthy bacteria that grows from the waste, which helps increase plant growth at a high rate of speed. The product has been sifted through before shipment, so there’s less work for you to do when it arrives.

No seeds exist in the Wiggle Worm Soil, so you won’t see any weeds sprouting when placed into the ground. And moisture will stay in the bag for a while, so long as you’ve stored it properly. But while it does work at a quick rate, some people may not notice much growth in the first week, especially those with indoor plants.

Make sure that you empty out your pot of any chemically produced fertilizers before you begin, and check the water level periodically. Doing so should see results and lower the time it will take for your young plants to get off the ground. Overall, the Wiggle Worm Soil Builder is a great fertilizer to have for indoor and outdoor vegetation.
Pros
  • The material has been sifted through prior to packaging
  • There are no seeds within the soil builder, which reduces the chances of weeds growing
  • Water stays in the soil longer, lowering the number of times that manual watering will need to be done
Cons
  • Growth may start slowly in the early stages

2. EarthPods Easy Indoor Plant Food : Best Organic Fertilizer For Easy Application (People’s Choice)

EarthPods Easy Indoor Plant Food ReviewRight off the bat, you will be able to tell easily that EarthPods cares about the environment. Their INdoor Plant Food is a fertilizer that comes in pill form, which absorbs into the soil once applied. The container is also made from recycled materials and biodegradable. It’s a small cup but has 100 capsules in total.

Use them for your plants, small trees and scrubs. You’ll see growth quickly, but the product is also safe to use with other heavy fertilizers if you wish.

Application is lightning fast. Just pop them in the soil making sure to do it in strategic locations where the bacteria will reach the plant best. Roots and the center portion around the stem are good places.

You’ll like using them so much that you might not even notice how quickly you’ll run out. If you’re okay with getting more than one cup for a large number of plants, then the EarthPods Easy Indoor Plant Food would be the second best fertilizer for you.
Pros
  • With the product, dissolving in liquid shouldn’t be necessary for most plants
  • Since the plant food is encased in small pods, applying can be done within seconds
  • Safe to use in potted gardens both indoors and outdoors
Cons
  • Depletes fast; people with lots of pottery or large gardens may need more than one case

3. Jobe’s Organics Vegetable & Tomato Fertilizer : Best Organic Fertilizer For Small Gardens

Jobe’s Organics Vegetable & Tomato Fertilizer ReviewJobe’s Organics Vegetable and Tomato Fertilizer, as the name implies, contains bits of decomposing tomato and several other fruits/veggies.

The combinations make for a great bacterial increase, whereby your budding plants will begin to germinate in record time.

In fact, that’s what this product is best for, so use it when you’re into the beginning stages of growing your plants.

If you want to bring it outdoors, throw some into your garden and watch how green all of your plants become. The fertilizer does contain a strong smell though, which should be expected. It can get a little annoying at times, so be sure that you don’t work with it wearing your best clothing.

Pros
  • Ideal for youthful plants that have just begun to sprout
  • Allows citrus plants to grow very fast, results will be seen within the first two weeks
  • Ingredients list a varied combination of bacteria; non-synthetic materials included
Cons
  • Contains a very strong odor that won’t go away quickly

4. Neptune’s Harvest Organic Hydrolized : Best Organic Fertilizer For House Plants

Neptune's Harvest Organic Hydrolized ReviewThe Neptune’s Harvest Organic Hydrolized is a remarkable fertilizer with a very long shelf date. That’s common among fertilizers, but the big advantage is consistency.

Instead of a big bag of waste material, the solution is liquid and contains fish extracts and seaweed. These can be used on plants of any age, so pour a little into the ground around any dying plants that you want to revive.

You will see them rejuvenate within a week’s time. But just like the previously viewed product, this one also contains a very strong odor.

You wouldn’t want to get it on your skin if you can, so consider wearing gloves unless you want your finger to smell like fish for the rest of the day. Still, Neptune’s Harvest is an outstanding fertilizer that’s good for outdoor garden plants, or any house plants you want to feed.

Pros
  • The product lasts for a very long time and can be used months after purchase
  • Produces good yields for both home fruits and veggies
  • Contains seaweed and fish extracts, a combination that’s known to encourage a plant’s natural ability to produce sugars
Cons
  • If the fertilizer touches the skin, the smell will linger for a long time, even after washing
  • Must be mixed with water prior to treatment

5. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag : Best Organic Fertilizer For Fast Germination

Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag ReviewThe Dr. Earth Organic 5 Tomato, Vegetable, and Herb Fertilizer comes in a medium-sized bag that’s resealable.

Ingredients have no GMO or artificially produced material; what you’re getting is all natural compost made by a brand with a great reputation.

This brand has been certified by OMRI and lists it on the bag itself. There are also instructions for beginners or those who have varied plants and must prep them differently.

It’s easy to follow, so save the bag if you’re not going to use it right away for later reading. And while growth will be noticeable once you’re using it, it might not be faster than that of your natural compost. Regardless, give the Dr. Earth brand a try if you want an all-purpose fertilizer for your plants.

Pros
  • No GMOs or other unnatural components
  • Tested and certified by OMRI for having organic and probiotic compounds in the ingredients
  • Easy to follow instruction listed on the back of the bag
Cons
  • Although the product is effective, growth may not be comparable to that of natural composting from home

6. Plant Magic Plant Food 100% Organic Fertilizer : Best Organic Fertilizer For Outdoor Fruit

Plant Magic Plant Food 100% Organic Fertilizer ReviewPlant Magic Plant Food is another completely organic fertilizer with some serious revival capabilities.

If you place it in the soil of a nearly dead plant in your garden, chances are high that it will be green again within weeks. But that’s not the only thing this bag is good for.

Use it for indoor scrubs and/or fruit, taking the proper steps to moisturize if portions of the bag are dry.

Additionally, the bag itself will probably be depleted very fast, so get more than one if your garden is big or your plants are large.
Pros
  • Has the potential to revive small dying trees
  • Great for household scrubs and potted tomatoes
  • Not messy to handle, application is fast and doesn’t require meticulous preparation
Cons
  • Easy to use all of the contents of a bag in just one session

7. VermisTerra – Standard Earthworm Castings : Best Organic Fertilizer For Mixing

VermisTerra - Standard Earthworm Castings ReviewThe VermisTerra Standard Earthworm Castings is a large bag of just that, casting from worms that you could use for outdoor and indoor plants of all types.

But surprisingly, the contents inside are quite pleasant to the senses, and won’t result in the odor hanging around your home.

After you place it in the pots, just water and wait for germination.

To make the bacteria really grow, use it together with other fertilizers and results may even be seen in a few days(if you’re just planting seeds). It’s a good choice for people that like to mix their fertilizers to create their own special concoction.

Pros
  • Has a pleasant smell that’s not strong or irritating
  • Can be used as a tea for bacterial growth
  • Germination will be noticed in just one week for most potted fruits
Cons
  • Portions of the bag may appear to be slightly too moist, others too dry

8. Root Naturally Azomite Rock Dust : Best Organic Fertilizer For Reviving Dying Plants

Root Naturally Azomite Rock Dust ReviewThe Root Naturally Azomite Rock Dust is another good fertilizer for plants that have the early signs of premature rot.

If yours can be described as such open up the resealable container and place some around the roots, being sure to hit the areas that are close to where you put the seeds.

Green will show again fast, and your plants will appear to have never been “sick” at all. Mix it with more compost if you’d like, and apply to everything in your fruit garden. But do be careful how you handle the bag because of its flimsiness.

Pros
  • Clears away premature rot in days, especially with indoor plants
  • The bag can be resealed to prevent drying
  • Produces root growth and livens scrubs that may appear to be dead already
  • Can be mixed with compost for added nutrients (for the plants)
Cons
  • The bag tears easily and recommended to be placed in a separate container, if stored

9. Liquid Kelp Organic Seaweed Fertilizer 1 Gallon : Best Organic Kelp Fertilizer

Liquid Kelp Organic Seaweed Fertilizer 1 Gallon ReviewThe Liquid Kelp Organic Seaweed Fertilizer is a one-gallon container in liquid form. The ingredients are seaweed, Ascophyllum Nodosum to be exact. Kelp is one of the best ingredients that you could use in a fertilizer, and speedy results will prove it.

Germination may even take place within a day if you prepare the soil correctly, so take your time in getting things done when you begin with the kelp.

Or simply spray it on the plants themselves, and their stems and flowering portions will strengthen and become brighter. The Liquid Kelp brand is recommended as a substitute or alternative to using traditional fertilizers, but works just as great.
Pros
  • Made only from one single seaweed plant
  • Can be sprayed right on the plants, or put sparingly in the soil
  • The kelp will create germination quickly and cure all blossom rot
Cons
  • Not recommended to apply during direct sunlight

10. SEA-90 Organic Fertilizer for Hydroponics : Best Water Soluble Organic Fertilizer

SEA-90 Organic Fertilizer for Hydroponics ReviewThe SEA-90 Organic Fertilizer for Hydroponics is useful for all sorts of plants, so you don’t have to settle for decorative greenery or veggies that you intend to eat later.

It’s water soluble, so add a little bit and it will dissolve into your plant’s roots at a quick rate producing germination in as little as 24 hours.

However, depending on how you prep the soil, pH levels can rise with this product.

This could either be a good or bad thing, according to what plants are growing. So as long as you know what you’re doing, try the SEA-90 and get your plants up from the roots in record time.
Pros
  • The ingredients are water soluble and can be prepared within minutes
  • Great for farm plants, citrus trees, and flowing indoor plants that may have received little sunlight
  • Results can be seen within only 24 hours of use
Cons
  • Will increase the acidity levels in the soil

Best Organic Fertilizers – Buyer’s Guide

Without fertilizer, it would be extremely difficult to grow some plants. But even with it, growth may not always happen at the speed that you would like. That’s why you should know as much about the product that you intend to buy as you can. Use the information below to help you shorten up your picks from the fertilizers above.

Know your Plants

Different plants have different ways in which they should be grown. For most, their growth rate will be exceedingly fast when cared for with good fertilizers or composts. To do this, you should stick with an organic fertilizer that doesn’t contain any GMOs or synthetic chemicals. These can harm your soil, and make plants grow much slower than using all natural ingredients.

The products reviewed above contain all sorts of organic material, from earthworm castings to seaweed and fish. Such material will allow bacteria to thrive in the soil, which is what plants need from the roots in order to become strong.

Clear away any Bad Soils

If you haven’t changed out the soil in your pots for a long time, you should do so before using any organic fertilizers. This will ensure that everything starts out fresh, and boost germination time as well. Check your water levels but also make sure that your fertilizers have a good amount of moisture. But don’t put in too much water.

So long as the soil is moist, things should be okay for you to water sparingly in the first week or two. But as mentioned in the last section, find out what things will make your particular plant grow faster, because they may not need to be watered at all in this stage.

Making a Tea

When growers refer to making a “tea” from fertilizer, they are talking about the mixing of other organic materials with it. This usually involves some form of compost or other worm-based waste that can produce lots of bacteria from the soil at a quick rate. it involves adding water and heating the mixture, being careful to not overheat it to the point where the bacteria and nutrients inside will die.

Once it settles at normal temperature, you can place it in your pots or garden. This doesn’t have to be done during the seedling stages, either. Older or dying plant may revive quickly again by using this process alone.

Learning How to Wait

For some, this can be the hard part. Waiting for germination can take anywhere from one day to one week or longer. This is entirely up to the plant you’re working with. But if it does take too long, then chances are high that you either prepped the soil incorrectly or did not add enough water.

There are all sorts of issues that can affect the growth rate in plants, some of which may involve the weather. Sunlight and temperature can also be a huge factor. Make sure that you’re treating your plants during the right seasons if you work outside in a garden. Doing your garden work during the right time of your can yield better results for the soil and your plants.

Common Issues

One of the most common complaints about fertilizers is the smell. Organic fertilizers are even worse at times, especially those with fish or seaweed-containing ingredients. The smell of such products may linger around the pots you place them in if you’re growing indoor plants. But even working in an outdoor garden may make the area have an unpleasant smell. Of course, this isn’t always the case, but there is something that you could do to deal with it. The first is picking an alternative that doesn’t have a bad odor. And the second is just waiting until it dissipates.

The smell comes from bacterial waste, and lets you know that the soil’s become ready to take on fast plant growth. Additionally, another complaint is the bags they are oftentimes sold in, which aren’t always very strong. This is to be expected from organic fertilizers, given the environmentally-minded nature of the companies that sell them. You could always place it in a different container, or simply appreciate the awareness that such an issue brings to the importance of recycling.

Conclusion

It’s hopeful that you have an idea about which products you want, which was reviewed above. They are all amazing in one way or another and will give your garden or home plants the strength and energy they need in order to thrive.

If you are planting vegetables or fruits for cooking, then the taste and consistency will be similar to what you may have had with plants obtained from your local farmer’s market. But out of the ten evaluated, the Unco Industries Wiggle Worm Soil Builder and EarthPods Easy Indoor Plant Food are the best for the largest variety of plants and soil conditions.

Yet, this is in no way a dig at the others, and they could always have more of something that you’re looking for that the picks mentioned. Whichever you end up choosing, you’ll be well on your way to having a plentiful and greener garden!

Related Posts

  • Best Grass Seed 2021 – Buyer’s Guide
  • Best Artificial Grass 2021 – Buyer’s Guide

Table of Contents

  • Selecting the Best Organic Fertilizers in April, 2021
  • 1. Unco Industries (WWSB15LB) : Best Organic Fertilizer For Indoor and Outdoors (Editor’s Choice)
  • 2. EarthPods Easy Indoor Plant Food : Best Organic Fertilizer For Easy Application (People’s Choice)
  • 3. Jobe’s Organics Vegetable & Tomato Fertilizer : Best Organic Fertilizer For Small Gardens
  • 4. Neptune’s Harvest Organic Hydrolized : Best Organic Fertilizer For House Plants
  • 5. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag : Best Organic Fertilizer For Fast Germination
  • 6. Plant Magic Plant Food 100% Organic Fertilizer : Best Organic Fertilizer For Outdoor Fruit
  • 7. VermisTerra – Standard Earthworm Castings : Best Organic Fertilizer For Mixing
  • 8. Root Naturally Azomite Rock Dust : Best Organic Fertilizer For Reviving Dying Plants
  • 9. Liquid Kelp Organic Seaweed Fertilizer 1 Gallon : Best Organic Kelp Fertilizer
  • 10. SEA-90 Organic Fertilizer for Hydroponics : Best Water Soluble Organic Fertilizer
  • Best Organic Fertilizers – Buyer’s Guide
    • Know your Plants
    • Clear away any Bad Soils
    • Making a Tea
    • Learning How to Wait
    • Common Issues
    • Conclusion
    • Related Posts

Comments

  1. Hugo says

    June 4, 2019 at 3:43 pm

    SEA-90 Organic Fertilizer for Hydroponics is last but not least! This fertilizer starts working on the first day of usage, so you’ll probably get the right result if you follow the prescriptions. Good luck!

    Reply
  2. Kira says

    July 3, 2019 at 4:06 pm

    I’ve used Dr. Earth Organic 5 Tomato a couple of times and every time I was shocked with the result – it was amazing. So, recommended this fertilizer for everyone who’s searching for something cheap but effective.

    Reply
  3. Macy says

    August 9, 2019 at 3:11 am

    I need such a fertilizer which can be used inside and outside. It shouldn’t be very harmful to me and my family’s health. Do you think I’ll succeed in searching?

    Reply
  4. Benjamin says

    September 2, 2019 at 9:10 am

    You know, there aren’t many effective organic fertilizers on the market. That’s why I was surprised by seeing so many options in one place. Hope, I’ll succeed in finding the right one.

    Reply
  5. Tiara says

    October 2, 2019 at 5:55 am

    I know that every case is individual and it’s weird to recommend everyone the same product. But if you’re really looking for something reliable – try EarthPods Premium. This organic fertilizer really changed the way I take care of my garden and gave me great results.

    Reply
  6. Jully says

    November 4, 2019 at 2:51 am

    There’s another thing: different plants require different fertilizers. At least that’s my experience. I can only say with confidence that The Dr. Earth really helped me with tomatoes!

    Reply
  7. Dolly says

    November 29, 2019 at 4:19 am

    I used The Unco Industries Wiggle Worm Soil Builder in my country garden for my outdoor flowers. They noticeably revived, the bushes became more magnificent and brighter. The result is very satisfying.

    Reply
  8. Alan says

    December 8, 2019 at 7:52 am

    You may not believe me, but the young apple tree in my garden, which suffered from frost, came to life after applying Plant Magic Plant Food!

    Reply
  9. Eric says

    December 29, 2019 at 5:54 am

    Started using the Neptune’s Fertilizer a few years ago when it was recommended by my local nursery. Used in on a recently planted, but dying Alaskan Blue Spruce Cypress tree, which was severely damaged by salt water in Hurricane Sandy. Looks great

    Reply
  10. Isaiah says

    January 5, 2020 at 9:10 am

    Seems like Neptune is working quite well, I have a plant container with tomatoes, borage, and basil growing altogether and they are doing great since I’ve been feeding them once per week.

    Reply
  11. Justin says

    January 28, 2020 at 12:53 pm

    Now I never use synthetic chemical fertilizers for my garden because (a) they are notorious for going into your local water bodies as run-offs and gradually but steadily disturbing your local ecosystem and (b) they basically destroy all the beneficial bacteria and fungi that you might have in your soil that keep the soil healthy and promotes healthy growth in plants. So, organic fertilizers are the best choice.

    Reply
  12. Philipp says

    February 12, 2020 at 5:48 pm

    Jobe’s is my garden friend. I have already given away many tomatoes and eggplants to friends and neighbors which is something I never expected to do when gardening only in containers. Yes this fertilizer is smelly but once worked into the soil it doesn’t have any odor, for humans at least.

    Reply
  13. Rosy says

    April 2, 2020 at 6:31 am

    Plant Naguc production is always good. I used partly all of their fertilizers and bio waters. higly recommended!

    Reply
  14. Mortimer says

    April 28, 2020 at 11:48 am

    Agreed about plant magic. I used this fertilizer last summer and had perfect flowers for all the season!

    Reply
  15. Jemma says

    May 5, 2020 at 8:16 am

    I have used this product in the past and it works great for me on tomato plants. It is also a good product for use in compost tea made for tomatoes and peppers.

    Reply
  16. Jina says

    June 2, 2020 at 1:36 pm

    I had an indoor jasmine bush that was pretty much dead. Gave it a shot of Neptune’s stuff and it came back livelier than ever and blooming more than it ever has.

    Reply

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