Best Organic Liquid Fertilizer For Vegetables of 2021: Top 6 Picks

Last update: 2021-02-28

If you’re new to gardening, you must know that fertilization is a must so your plants can grow healthy. This is especially true for vegetables. The remaining question is how you can figure out the right fertilizer for your vegetable garden.

Today, it’s our pleasure to provide you an answer through this detailed guide on choosing the best organic liquid fertilizer for vegetables.

Here are the best organic liquid fertilizers for vegetables you can buy in 2021:

  • Best Overall: Fox Farm FX14049
  • Best For Root Growth: GS Plant Foods Organic Liquid Kelp Plant Fertilizer
  • Best For Vigorous Growth: Harris Organic Plant Food and Plant Fertilizer
  • Best For Healthy Vegetables: Planet Earth Natural Organic Organic Fertilizer
  • Best For Tastier Vegetables: Indian River Organics Fertilizer
  • Best For Tomato: Dr. Earth 751 Liquid Solution ProBiotic 3-3-3
6 Best Organic Liquid Fertilizers For Vegetables
Best Overall
Fox Farm FX14049
    Best For Root Growth
    GS Plant Foods Organic Liquid Kelp Plant Fertilizer
      Best For Vigorous Growth
      Harris Organic Plant Food and Plant Fertilizer
        Best For Healthy Vegetables
        Planet Earth Natural Organic Organic Fertilizer
          Best For Tastier Vegetables
          Indian River Organics Fertilizer
            Best For Tomato
            Dr. Earth 751 Liquid Solution ProBiotic 3-3-3

              Best Overall: Fox Farm FX14049

              Fox Farm FX14049
              Fox Farm FX14049
              9.8Outstanding
              Pros
              • Affordable
              • Perfect for all growing stages - a high-phosphorus, fast-acting, ultra-potent fertilizer
              • No strange smell
              Cons
              • We recommend using ½ or ¼ of the recommended amount - It’s hot

              Fox Farm FX14049 has been a popular choice for many farmers because of their wonderful performance, safety, and affordability.

              This is a high-phosphorus, fast-acting, ultra-potent fertilizer specialized for vegetables. They can be applied throughout the plant growth process to boost nutrient cycling as well as heal root systems.

              Compared to other fertilizers, we find this one works a lot better than the organic or equal to the non-organic, while the price is a lot cheaper. Our testers also like the fact that it has no strange odors.

              Fox Farm FX14049 Specifications

              Size

              32 oz

              Highlight Features

              a high-phosphorus, fast-acting, ultra-potent fertilizer

              Big Bloom

              Verdict

              Safe, reliable, and functional, the Fox Farm FX14049 is a great choice for any vegetable gardener and farmer.

              Best For Root Growth: GS Plant Foods Organic Liquid Kelp Plant Fertilizer

              GS Plant Foods Organic Liquid Kelp Plant Fertilizer
              GS Plant Foods Organic Liquid Kelp Plant Fertilizer
              9.6Outstanding
              Pros
              • Enhance mineral uptake and stimulating natural root growth - contains 6% potash, 0.23% phosphorous, and 2% nitrogen
              • Encourage vegetables to grow darker green - seaweed plant Ascophyllum Nodosum
              • Economical
              Cons
              • Small bad
              • The bottle is heavy

              For newly planted vegetables or during early growing stages, this fertilizer comes in handy at boosting their root lengths.

              It contains 6% potash, 0.23% phosphorous, and 2% nitrogen – a golden ratio for mineral uptake and stimulating natural root growth.

              You can use this fertilizer on any vegetable and soil with no worry about harmful chemicals or waste.

              The main ingredient is the seaweed plant Ascophyllum Nodosum, which helps your veggies grow with darker green as well as relieve the stress caused by the surrounding. Such as heat, drought conditions, and wind.

              GS Plant Foods Organic Liquid Kelp Plant Fertilizer Specifications

              Size

              32 ounces

              When to Apply

              when plants are beginning to bud

              Coverage Area

              6000 square feet

              Fertilizer Analysis

              Potash: 6.0%

              Phosphorous: 0.23%

              Nitrogen: 1-2%

              Highlight Features

              contains 6% potash, 0.23% phosphorous, and 2% nitrogen

              seaweed plant Ascophyllum Nodosum

              Verdict

              In need of the best organic liquid fertilizer for root growth? The GS Plant Foods Organic Liquid Kelp Plant Fertilizer should be your best bet.

              Best For Vigorous Growth: Harris Organic Plant Food and Plant Fertilizer

              Harris Organic Plant Food and Plant Fertilizer
              Harris Organic Plant Food and Plant Fertilizer
              9.6Outstanding
              Pros
              • 100% safe & not burn plant leaves - use micronutrients and trace minerals derived naturally from fish
              • Promote vigorous plant growth - enzymatic cold process
              • Versatile, able to be used indoors and outdoors – no smell
              Cons
              • No complaint

              The Harris Organic Plant Food and Plant Fertilizer is a safe solution to boost your vegetables’ growth in a shorter time without burning their leaves.

              Its ingredients include micronutrients and trace minerals derived naturally from fish, which is 100% safe. To exploit their benefits optimally, these ingredients were then passed through an enzymatic cold process which creates a hyper-active bio-stimulant, making veggies grow vigorously.

              Rest assured, their performance and safety have been demonstrated by Native American agriculture practices.

              The biggest bonus is it has no unpleasant smell so you can use this organic fertilizer both indoors and outdoors.

              Harris Organic Plant Food and Plant Fertilizer Specifications

              Size

              32oz

              When to Apply

              every 2 weeks

              Coverage Area

              10,000 sq. ft.

              Fertilizer Analysis

              3-3-0.3

              Highlight Features

              use micronutrients and trace minerals derived naturally from fish

              enzymatic cold process

              no smell

              Verdict

              The Harris Organic Plant Fertilizer is currently one of the most sought-after plant foods with the main use of stimulating vigorous growth.

              Best For Healthy Vegetables: Planet Earth Natural Organic Organic Fertilizer

              Planet Earth Natural Organic Organic Fertilizer
              Planet Earth Natural Organic Organic Fertilizer
              9.4Outstanding
              Pros
              • 100% eco-friendly and safe for plants – ingredients chosen from Natural & Organic sources
              • Reliable – made and manufactured in the USA
              • Functional - contain nutrients and beneficial microorganisms
              Cons
              • A bit time-taking to see the difference

              If your goal is huge, healthy vegetables, then the Planet Earth Natural Organic Organic Fertilizer is worth a try.

              Its ingredients are nice because they’re all derived from Natural & Organic sources. For example, oyster shell, neem seed meal, insect frass, and so on. The biggest selling point is the whole manufacturing process is in the USA, which ensures quality.

              It contains nutrients and beneficial microorganisms for both plant health and soil. You can use it alone or mix it with any existing feeding regimen.

              The main benefit is boosting vigorous vegetative growth.

              Planet Earth Natural Organic Organic Fertilizer Specifications

              Size

              32 ounces

              Highlight Features

              ingredients chosen from Natural & Organic sources

              made and manufactured in the USA

              contain nutrients and beneficial microorganisms

              Verdict

              We feel the Planet Earth Natural Organic Organic Fertilizer is best suited for those gardeners who aim to grow their vegetables healthily with no harm to the environment.

              Best For Tastier Vegetables: Indian River Organics Fertilizer

              Indian River Organics Fertilizer
              Indian River Organics Fertilizer
              9Outstanding
              Pros
              • Not a problem to use with application equipment - water solubility
              • Reliable & safe for both pets and humans - OMRI listed, meet USDA standards, and guaranteed for containing no heavy metals, mercury, or chlorine
              Cons
              • A bit pricey
              • A bit smelly

              The Indian River Organics Fertilizer stands out from the crowd for its flawless performance with application equipment, thanks to its water solubility, safety, and no waiting period although it’s organic fertilizer.

              Made of 100% natural materials that are all OMRI listed for safety, it meets USDA standards and is a reliable option for vegetable feeding.

              There’s no heavy metals, mercury, or chlorine found in this product, meanwhile, it’s safe for both pets and humans.

              But what we like the most about this fertilizer is it helps our veggies tastier, greener, and more nutritious.

              Indian River Organics Fertilizer Specifications

              Size

              1 Gallon

              Fertilizer Analysis

              2-3-1

              Highlight Features

              water solubility

              OMRI listed, meet USDA standards, and guaranteed for containing no heavy metals, mercury or chlorine

              Verdict

              Not only help your vegetables grow greener and healthier, but the Indian River Organics Fertilizer also makes them tastier.

              Best For Tomato: Dr. Earth 751 Liquid Solution ProBiotic 3-3-3

              Dr. Earth 751 Liquid Solution ProBiotic 3-3-3
              Dr. Earth 751 Liquid Solution ProBiotic 3-3-3
              9Outstanding
              Pros
              • Enhance tomato extend roots and growth - 3-3-3 rating & include chelated multi-minerals
              • Safe & not burn leaves
              • Easy to apply
              Cons
              • Smell terrible
              • Wish it had a spout

              The Dr. Earth 751 Liquid Solution ProBiotic 3-3-3 is an all-purpose fertilizer with chelated multi-minerals for the purposes of vegetable growth enhancement.

              In detail, it encourages the plant roots to thrive stronger and deeper while correcting micronutrient deficiencies. While this liquid fertilizer functions well on most plant types, it receives the most positive feedback from tomato farmers and gardeners.

              It’s easy to apply, makes tomatoes look great, and grow faster than usual whereas not burning their leaves or causing harm to the soil.

              Dr. Earth 751 Liquid Solution ProBiotic 3-3-3 Specifications

              Size

              16-Ounce

              Fertilizer Analysis

              3-3-3

              Highlight Features

              3-3-3 Formulation

              Chelated multimineral

              Verdict

              If you’re currently a tomato gardener/farmer and wish them to grow faster, the Dr. Earth 751 Liquid Solution ProBiotic 3-3-3 is our recommendation for you.

              How To Choose The Best Organic Liquid Fertilizer For Vegetables?

              Needed Nutrient

              One of the most important things to consider what nutrients your soil currently needs.

              The best way to know this is by doing a soil test, from which you will get a report showing the nutrients present in your soil. Then, you will know what fertilizer can help.

              Soil type

              Before buying any fertilizer, you have to take into account the type of soil you’re using: loam, sand, or clay? While loam seems to be the best type of soil, most people have a combination of the three types, in which sand or clay often makes up a larger part.

              Sandy soil drains water well but cannot hold nutrients well. On the other hand, clay sold is rich in nutrients but doesn’t drain well.

              The choice of fertilizer must be based on your type of soil to stop the fertilizer from being washed away and prevent calcium deposits due to poor drainage.

              What do the numbers mean?

              As you browse different organic fertilizers, you will see the percentage of concentration of nutrients on their packaging, including the NPK ratio (Nitrogen, Phosphorous, as well as Potassium).

              For instance, in a 6-12-0 formula, the percentage of Nitrogen is 6%, of Phosphorous is 12%, and of Potassium is 0%.

              So, you should pay attention to these numbers and indicators to find the suitable product for your vegetables.

              Which Brands Make The Best Organic Liquid Fertilizer For Vegetables?

              Fox Farm

              Founded in 1984, this brand specializes in making fertilizers, soil mixes, as well as micro-brewed liquid plant foods. It’s well known for delivering high-quality products.

              Indian River Organics

              With 50 years of experience in the industry, this brand relies on modern tech to come up with great agricultural products. It’s one of the best organic fertilizers on the market.

              Dr. Earth

              This brand was created 29 years ago and has since become a trusted name in the organic community. It takes pride in setting the industry standard through innovative technology.

              FAQs

              Do I need to fertilize my vegetable garden?

              Yes, you do. Vegetables grow quickly and this takes a lot of nutrients from the soil. Therefore, to ensure the healthy growth of your vegetables, you need to use good fertilizers.

              How often should you fertilize a vegetable garden?

              You should fertilize your vegetables every 3 to 4 weeks even after the fruit appears.

              When to fertilize a vegetable garden?

              You should fertilize your vegetable garden on a regular basis. However, note that before planting the garden, you need to apply slow-release fertilizers, then apply quick-release fertilizer during the growing process.

              Can you fertilize a vegetable garden?

              Yes, if you apply too much fertilizer in your garden, your vegetables can be burned. They will likely have a lot of foliage but produce little fruit.

              How do you apply liquid fertilizer to vegetables?

              For foliar feeding, you should fill the liquid fertilizer in a can and spray the whole plant, it will absorb nutrients directly through its leaves and the root system.

              When you use the liquid fertilizer with a fertigation system, you apply it into the soil directly and the root system will absorb nutrients.

              Conclusion

              This is the end of our comprehensive guide on how to choose the best organic liquid fertilizer for vegetables. We hope that you have figured out what to look for in your fertilizer to use in your garden and that you will get amazing veggies.

              Harry Ramos
              Harry Ramos

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