Best Liquid Lawn Fertilizer – 2021 Buying Guide

Just like humans and animals, grass and plants require supplements (Lawn Fertilizer) to develop. Most grass and plants don’t normally deliver enough of the supplements they need to flourish, which can bring about sautéing, shriveling, and fewer blooms. in this article we will discuss which is the best liquid lawn fertilizer. Luckily, fertilizers can give the foliage a boost of nutrients and minerals through supplements to increase the plant’s health. Healthy lawns are better prepared to oppose disease, weeds, and bugs, so it is essential to increase the supplements in turf and soil.

Best Liquid Lawn Fertilizes Review

Advanced 16-4-8 Liquid Fertilizer for Spring/Summer

Key Features

  • Premium 16-4-8 balanced liquid lawn feed
  • Nitrogen, phosphorus and potassium nutrients
  • Contains seaweed and fish
  • Made with feed grade ingredients
  • Great for every grass type
  • Fertilizer concentrate solution
  • Made and manufactured in the USA
  • Used commercially

The Simple Lawn Solutions’ advanced fertilizer holds the ideal mix of macro nutrients that southern grass needs. The liquid fertilizer likewise contains fish and seaweed, making it a total grass food.
This liquid fertilizer is all-natural and non-harmful, made with the most perfect supplements to guarantee green grass, solid roots, and ideal soil health. It works for southern grass, including Bermuda, St Augustine, Buffalo, Zoysia, Florida Palmetto, Bahia, and more.


  • Thicker greener lawn
  • Super quick results
  • Easy to use
  • Pet safe fertilizer
  • Free of harsh chemicals
  • Works even during dry weather


  • Pull behind sprayer may not work

Simple Lawn Solutions Concentrated

Key Features

  • Premium growth booster
  • Increases seed germination
  • Increases growth responses
  • Enhances cell division
  • Enhances elongation
  • Increases chlorophyll production
  • Increases natural enzyme activities
  • High quality ingredients

If your grass needs a quick boost of supplements, then consider this organic liquid fertilizer from Simple Lawn Solutions. The item promises to expand the vertical and horizontal growth of grass within days.
The makers energize this high phosphate concentrate (6-19-0) with humic acid and fulvic, making it ideal for new grass and seeding. Indeed, the Growth Booster is a fantastic fertilizer for both new and worn out lawns that need some help to return to life.
The product contains natural ingredients and you can use this fertilizer not harmful for dogs and children on all types of grass.


  • Great for every grass type
  • Ready to spray bottle
  • Enhances existing minerals in soil
  • Covers 3,200 square feet
  • Made and manufactured in the USA
  • Used commercially


  • Expensive

LawnStar Chelated Liquid Iron

Key Features

  • Revitalize your garden, farms, flowers, shrubs and trees
  • Builds up a strong, healthy new vibrancy
  • Increases root evolution and plant stress tolerance
  • Perfectly steady in high alkaline soils, up to 9.5 pH
  • EDTA Free
  • Made and manufactured in the USA
  • Rapid results
  • Great for alkaline soil

Lawn Star’s another incredible choice is this adaptable formula that works not only on your lawn but also on bushes, trees, and flowers. It doesn’t contain nitrogen, potassium, or phosphorus, and it works by adding chelated liquid iron to grass and soil.
Iron insufficiency is a typical reason of yellowing, early torpidity, and inability to flourish. Chelated liquid iron assists with combating these issues, reestablishing your lawn by increasing the production of metabolism and chlorophyll.
This fertilizer improves root production for long haul development and helps increment its resistance to extreme varieties in temperature. The makers based it on sugar, so it is a lot more grounded than some other chelated options.


  • Good value for the money
  • Easy to apply
  • Effective
  • Convenient
  • Easy to mix
  • Multipurpose


  • Average performance

Commercial Grade Lawn Energizer

Key Features

  • Easy to apply
  • Ready to spray bottle
  • Great for every grass type
  • Liquid Iron, nitrogen and micro-nutrient blend
  • Enhances soil
  • Made and manufactured in the USA
  • Used commercially
  • Effective

The fertilizer from Simple Lawn Solutions is predominant nitrogen and potash 15-0-15 NPK. It is a top-notch lawn food supplement that helps increasing the greenery around your home. As this fertilizer is free from phosphorus, it improves the soil resistance power against warmth and cold. It is free from all synthetic substances and is an all-natural fertilizer that is safe to use and is ideal for sandy soils.
The organic food-grade ingredients promote health, hardiness, and turf’s strength. The makers made this organic liquid fertilizer with bioactive organics, feed grade urea, potash, sulfur, and Hulic/Fulvic acids. Spraying should be conducted frequently when making use of this fertilizer to assure the nutrients absorb rapidly.


  • Contains high quality ingredients
  • Safe to use
  • Nourishes with pure liquid nutrients
  • Easy to use
  • Quick results
  • Good value for the money


  • Average packaging

Superior Nitrogen and Potash 15-0-15 NPK

Key Features

  • Premium 15-0-15 liquid lawn food nutritional supplement
  • Enhance green and growth responses
  • Phosphate-free lawn food
  • Improves resistance to heat and cold
  • Encourages health, hardiness and strength of turf
  • Great for sandy soils
  • Covers 3,200 square feet
  • Great for every grass type

It is an extraordinary choice if your grass gives indications of an insufficiency of potassium or nitrogen, for example, yellow or earthy colored regions and inconsistent development. Note that this item doesn’t contain phosphate.
This formula helps grow your grass quicker, greener, and more grounded. The humic/fulvic acid conditions the soil and helps the transfer of food throughout the plant cell. It will help improve the ability of your lawn to withstand warmth and cold.


  • Contains humic acid
  • Feed grade ingredients
  • Made and manufactured in the USA
  • Used commercially
  • Effective


  • Expensive

Final Verdict

I suggest Simple Lawn Solutions advanced 16-4-8 Liquid Fertilizer. 16-4-8 is the ideal blend of critical macronutrients, which your grass needs to become healthy. The fertilizer contains great natural feed that nourishes your yard. You may like this item because it doesn’t have any chemical that can harm your grass.
You can easily apply this product in your yard. It is also a complete N-P-K that gives your lawn growth and greening while offering supplements for roots, turf, and concrete strength.

Fertilizers are incredible to furnish you with the best quality yard. There are bunches of sorts of fertilizers for all various requirements for making your yard look better and become healthier. Whether you need to invest energy in developing flowers and vegetables or need a great lawn for the children to play through the year, there will undoubtedly be a fertilizer that suits your necessities.
This guide has separated the real factors, clarifying all the various advantages of fertilizers and how they work. With our product review, you can work out which fertilizer is best for you and your lawn with little of a stretch.

What is a Fertilizer?

Fertilizer is a combination of supplements that lawns regularly need. Fertilizers are accessible in fluid and granular structures and can be natural, which means they’re made of organic materials, or synthetic, which means labs manufacture the supplements.

Synthetic fertilizers often work quicker than organic fertilizers; however, organic fertilizers frequently contain extra supplements beneficial to turf wellbeing. Organic or natural fertilizers are also less prone to burn lawns than synthetic fertilizers.

The maker’s label all fertilizers with their full-scale supplements, the three supplements that are fundamental for plant development:

Nitrogen (N) helps green-up lawns and produces leafy growth in plants.
Phosphorus (P) reinforces the roots of plants.
Potassium (K) improves the general development of plants, keeping them solid and balanced.

Kinds of Fertilizers

If you truly need that lavish, green grass, you will need to find the best liquid lawn fertilizer for your situation. Shockingly, there are dozens of kinds of fertilizers available. Which do you pick? That is where we come in. Today we will break down the best liquid lawn fertilizers and how they work.

Whether you are searching for organic fertilizer or synthetic fertilizer, we have suggestions that will suit your requirements. Just think, with a little know-how, you will have the best lawn on the block and be the envy of your neighbors! So let’s discuss liquid lawn fertilizers and how to pick the one for you.

Things to Consider before Buying Liquid Lawn Fertilizer

Besides mowing, cutting, and edging, feeding your lawn is also an essential seasonal task. There are tons of liquid lawn fertilizers available in the market,

Below are few things to examine before buying a liquid lawn fertilizer.

Grass Type
There are various types of grass like Kentucky bluegrass, tall or red fescue, Bermuda, and zoysia. All these types of grass need a proper amount of nutrients provided by the lawn fertilizers. Different types of grass require less watering and maintenance than others.

Begin with a Soil Evaluation

Begin with a soil evaluation. Feeding your lawn supplements it doesn’t require is futile. A soil evaluation examines the pH of your soil and key supplements. You can take a soil sample to your district office for a checkup, or you can buy a DIY soil evaluation pack.

When you have the test results, you will know which supplements you need to apply, and you can explore the ideal approach to apply them.

Rates and Ratios

Once more, the best fertilizer for your garden is one that has the supplements your soil demands. The manufacturers sell fertilizers by a numbering structure that displays nitrogen, phosphorus, and potassium. So, if it is 5-5-5, it has 5 parts of nitrogen, 5 parts of phosphorus, and 5 parts of potassium.

Best Time to Fertilize your Lawn

Depending upon the fertilizer you apply, you may require fertilizing pretty much frequently. It’s ideal to refer to the manufacturer’s objectives and apply as they prescribe.
As a general rule, you can apply an all-season fertilizer at any time of the year. There are occasional blends accessible streamlined to a specific season and your lawn requirements during that time.

The Volume of Lawn Fertilizer to Use

With this, as with when to fertilize, it exactly relies upon what you’re applying. Follow your maker’s directions for the amount to use. Try not to over-fertilize your lawn. A lot of fertilizer can make the blades of grass become burned, and the fertilizer can harm the grass-root framework.

Fertilizer burn forms yellow, ugly tracts that can take a considerable length of time to grow back. So fertilize your lawn as it urges on the label of your product.

Liquid Fertilizer vs. Granular Fertilizer

There are many ways that you can use to classify yard fertilizers. However, the most legitimate path is to order them as “liquids” and “granular.” Choosing between the two types of fertilizers can be quite frustrating, even to the most devoted gardener. Testing the pros and cons of each type is pivotal to building a vigorous garden. Gauging the advantages and disadvantages of each sort is urgent to make a healthy yard.

Liquid Lawn Fertilizer

This type of yard fertilizer comes as a concentrate or water-soluble powder of synthetic chemicals. Liquid fertilizers are made of different supplements, including nitrogen, phosphorus, potassium, and iron. We dilute the powder blend or concentrate on making a solution and then apply this using spray containers or sprinklers.
Liquid fertilizers are effective and immediately ingested through the leaves or roots. This makes supplements accessible to plants immediately. The quick ingestion rate implies that you need to apply liquid fertilizers every 2 to 3 weeks regularly. They are best used in compartment plants, yet additionally, they do incredible on yards.


  • Simple application
  • Consistency of use
  • Will mix well with crop protection items
  • Incredible for starter and in-season application
  • Act rapidly to make supplements accessible to plants


  • Can cause serious harm in case you do not follow instructions
  • Can filter far into the soil, making it inaccessible
  • Require more continuous applications contrasted with granular fertilizers
  • Add to water contamination in case it soaks into storm sewers.

Granular Lawn Fertilizer

This is a fertilizer liquid slow release that’s moved into the soil after sprinkling or spraying. The moderate assimilation paces of granular fertilizers make them last more. The release period will differ contingent upon the fertilizer used and other ecological conditions. Mostly the release time frame lasts from one month to nine months.
The slow-release mechanism implies that granular fertilizers are applied less frequently contrasted with liquid fertilizers. All things considered, this type of liquid fertilizer significantly lessens the odds of harming your lawn. You can likewise get chemical-free natural fertilizers as they are commercially accessible.


  • Significantly savvier to apply
  • Remarkable fertilizer that you can apply in dry and hot times of the year
  • The slow-release process implies you apply less frequently contrasted with liquid fertilizer.
  • The slow-nourishing process avoids burning.
  • More effective for the heavy pre-plant application


  • Take a long time to give conclusive outcomes.
  • The slow-release process not appropriate for stimulating restoration from deficiencies
  • Require warm temperature and dampness to act
  • Improper application leaves dashes of scorched grass.
  • Soil pH antagonistically influences their viability.

Fast-Release vs. Controlled-Release Nitrogen Fertilizer

Nitrogen is perhaps the most used supplement that advances development. Reaction, to a great extent, relies upon the source of nitrogen used and the application rate. Given the nitrogen source you use, the length of supplement release may fluctuate. Because of that, two primary releases concur with the type of nitrogen fertilizer used. These are fast release and controlled-release operations.

Fast-Release Nitrogen Fertilizer

We sometimes refer fast release nitrogen sources as “solvent” nitrogen sources. Fertilizers that discharge nitrogen rapidly incorporate ammonium sulfate, ammonium nitrate, calcium nitrate, and urea. Mostly, the release period is within one week. Some of these fertilizers release 100% of their nitrogen within 24 hours following application.


  • Speedy response (greening)
  • Give nitrogen when soils are cold.
  • Affordable


  • More prone to ignite grass
  • Misfortunes through air or soil are more probable.
  • May cause an unwanted massive flush of growth
  • It will help if you make few applications to maintain lawn quality.

Controlled-Release Nitrogen Fertilizer

We sometimes refer to controlled-release nitrogen fertilizers as “polymer” or “sap” covered fertilizers. It is because the assembling cycle includes covering the nitrogen substrate with either resin or polymer. The covering functions to fill in as a membrane and its thickness influence the length of the release.
The length of release ranges from 8 to 52 weeks following application. You can predict and test the controlled release process. Examples of controlled-release nitrogen fertilizers are sulfur-covered urea, activated sewage ooze, and water-insoluble nitrogen.


  • Give uniform grass growth.
  • Less prone to be wasted through air or soil
  • Not liable to scorch the grass


  • Most controlled-release nitrogen fertilizers are costly.
  • It doesn’t result in a speedy color change in the grass.
  • It may not work on stony soils.

Caution: Look at this first

Normally, there are some security concerns with using any fertilizer, regardless of whether it safeguards your yard, your pets, you, or the climate. You may be in apprehension of a lawn fertilizer before and after like this one, yet recall that chemical fertilizers regularly work on the surface of your plants and not necessarily at the root. Notwithstanding, if your roots are solid, and you need the greenery to produce quicker, a chemical solution can be appropriate.

Wear Gloves

When you are applying fertilizer, ensure you secure yourself. If your skin interacts with nitrogen, you can encounter a synthetic burn.

Store Safely

Whether you are working with natural or chemical fertilizer, it is critical to keep it away from kids and pets. A decent spot to store it is in a nursery shed or your carport. If you live in a district that gets extra warm during the summer, move the fertilizer to an indoor region.

Cautiously apply

You certainly do not want to scorch your grass, so follow the directions on the sack. Over-fertilization can happen effectively, particularly with chemical fertilizers. Also, keep in mind the drainage. Once you fertilize your yard, the synthetic substances are sitting on top of your grass. So keep pets and kids off it until you’ve watered or it has rained, so most of those supplements have subsided into the soil or runoff in the groundwater.


What is the best time to apply liquid fertilizer?

You should use liquid fertilizer as a foliar splash in the cooler part of the day to forestall leaf sun-burn early morning, late evening, or even cloudy days. Do spraying as often as daily to every week for best outcomes. While treating daily, use a weekly solution.

Is liquid lawn fertilizer better?

The best fertilizer for your grass is one that contains the supplements your soil requires. One upside of using a liquid lawn fertilizer is that you can blend in some other supplements your soil needs with little of a stretch.

Does rain wash away liquid fertilizer?

A lot of rain could wash away the fertilizer before it drenches into the soil, so plan to fertilize a few days before heavy rain arrives or a few days later.

How often should I use liquid fertilizer?

Many specialists propose treating your yard four times a year. Treating multiple times each year is bad. Indeed, most homeowners could get by with two every year.

How long does liquid lawn fertilizer last?

Unlike pesticides and herbicides, which have a period of only one to the maximum of four years since they lose their strength after some time, natural fertilizers comprise organic minerals, and you can store unused supplies from year to year.

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