[Top 11] Best Liquid Lawn Fertilizer: Review & Buyer’s Guide By Experts

Choosing a fertilizer that provides adequate nutrients is the best treatment for your lawn. However, there are many types of fertilizers on the market, and you are confused about which is the best liquid lawn fertilizer.

You need to consider many factors to find the right fertilizer for your lawn. So, in this article, we will guide you to choose a good fertilizer for your lawn. 

In addition, Swipe Garden will bring 11 recommendations, including best-selling products from trusted manufacturers. It will help you find the best liquid fertilizer for lawn treatment needs.

Our Top Picks

Product ImagesProduct NameDetailsEditor's RatingPrice
Simple Lawn Solutions
  • Weight: 2.99 pounds

  • Manufacturer: UAS of America

  • Good for newly sown grass
  • 4.9Amazon-Check-Price-button
    Scotts Liquid Turf 
  • Weight: 3.04 pounds

  • Manufacturer: The Scotts Company

  • Easy-to-use faucet design
  • 4.9Amazon-Check-Price-button
    Easy Lawn Fertilizer
  • Weight: 3 pounds

  • Manufacturer: UAS of America

  • Good for spring and summer lawns
  • 4.8Amazon-Check-Price-button
    Superior Nitrogen & Potash 
  • Manufacturer: UAS of America

  • Weight: 12.1 pounds

  • Provides plenty of potassium and nitrogen
  • 4.8Amazon-Check-Price-button
    Ultimate 3 18 18
  • Manufacturer: UAS of America

  • Weight: 3 Pounds

  • Good for lawns lacking potassium and phosphorus
  • 4.8Amazon-Check-Price-button
    Scotts Turf Starter Food
  • Manufacturer: ScotchBlue

  • Weight: 2.8 Pounds

  • Stimulate grass growth effectively
  • 4.7Amazon-Check-Price-button
    Environmental 7001200 Green
  • Manufacturer: Environmental Factor

  • Weight: 22 pounds

  • Good for perennial grass
  • 4.7Amazon-Check-Price-button
    Scotts Liquid Turf Builder
  • Manufacturer: The Scotts Company

  • Weight: 2.7 pounds

  • Water-ready design
  • 4.7Amazon-Check-Price-button
    VPG Ferti-Lome Liquid Plant 
  • Manufacturer: VPG

  • Weight: 1.3 pounds

  • Good for iron-deficient lawns
  • 4.7Amazon-Check-Price-button
    Medina 12-4-8 Lawn
  • Manufacturer: Medina

  • Weight: 1 pound

  • Great coverage
  • 4.6Amazon-Check-Price-button
    Southern Ag 01952 Liquid 
  • Manufacturer: Root 98 Warehouse

  • Weight: 1.32 pounds

  • Quick effect
  • 4.6Amazon-Check-Price-button

    #1. Simple Lawn Solutions – Best for New Lawns

    Best Liquid Lawn Fertilizer - Simple Lawn SolutionsAmazon-Check-Price-button

    Product’s highlights

    What is the best liquid fertilizer for lawns? Our first proposal was a simple solution for fast-growing lawns from the brand Simple Lawn Solutions. If you need to supply nutrients to your lawn immediately, you can consider this fertilizer.

    A unique feature of this liquid lawn fertilizer is its high phosphate content up to 6-19-0. This feature can provide humic and fulvic acids to provide the necessary energy for lawn products. According to our tests, Simple Lawn Solutions is the ideal choice for seeding.

    We included this fertilizer model on the list because it is suitable for new seeds and is highly effective even on old lawns. In fact, even old lawns can be brought to life with fertilizer from Simple Lawn Solutions.

    We are sure you will be surprised to see the growth in the lawn’s length and thickness after using the liquid fertilizers. After just a few days, you will see visible results.

    Users appreciate the faucet design that comes with the bottle. So, using the sprayer becomes more accessible than ever.

    In addition, the ingredients in the liquid fertilizers are all very natural, so you do not need to worry about safety when using them. That way, you can completely let pets or children work on the lawn.


    • Easy to use
    • Fast speed
    • Suitable for newly sown seeds and old lawns
    • Spray bottle design


    • Low-pressure holding hose

    Bottom line

    Simple Lawn Solutions, high in phosphates, is ideal for newly seeded lawns and old lawns. You will be impressed with the evident and quick effect after two to three days of use.

    #2. Scotts Liquid Turf Builder Lawn – Best for Ease of Use

    Best Liquid Lawn Fertilizer - Scotts Liquid Turf Builder Lawn
    Product’s highlights

    Scotts is a 2-in-1 fertilizer worth considering buying for your lawn. It can provide nutrition with an accessory that attaches to the hose, so it is very effective.

    Connecting the hose to the bottle and using the extra trigger is like watering the lawn. This design has given Scotts 2 in 1 liquid lawn fertilizer a great advantage.

    Like all spray bottles with nozzles attached, the purpose of this design is to help users save time in lawn treatment.

    The remarkable thing about this liquid lawn fertilizer is its simplicity and ease of use. To activate and control the water flow, you need to turn it on/off.

    In addition to the high nitrogen content and 29 – 0 -3 nutrient ratio formula plus a convenient design that allows you to use it year-round and throughout the growth of the grass. Besides, the manufacturer has added a greening agent to bring a green lawn for you quickly.

    Coverage can be up to 2000 square feet per 32 ounces bottle. Yet, it is highly dependent on the nozzle pressure. So check the nozzle for high efficiency.


    • High nitrogen content
    • Contains greening agent
    • Suitable for a variety of grasses
    • Simple operation


    • The injection mechanism is not impressive

    Bottom line

    This liquid fertilizer has a highly convenient design that helps you save most of your lawn care time. Moreover, the high nitrogen content and greening agent help your lawn quickly become green.

    #3. Easy Lawn Fertilizer – Best for Spring and Summer Lawns

    Best Liquid Lawn Fertilizer - Easy Lawn Fertilizer

    Product’s highlights

    Easy Lawn Solutions fertilizer offers an excellent blend and balance of macronutrients. They include essential substances for your lawn in spring and summer, such as nitrogen, phosphate, potassium.

    Besides, Easy Lawn Solutions liquid lawn fertilizer also contains seaweed extract, so the liquid fertilizers have effective growth stimulants.

    Another outstanding advantage that we cannot ignore in this best liquid nitrogen fertilizer for lawn is that it contains nitrogen. This type of substance in fertilizers gives the ability to be short and long.

    In other words, using this fertilizer for the lawn will stimulate the grass to increase and keep it for a long time. Thanks to nitrogen, you don’t have to worry about stress tolerance in your lawn as the fertilizer has increased root strength.

    Easy Solutions liquid lawn fertilizer is also a highly liquid lawn fertilizer concentrate. Therefore, the effect is rapid and can be seen clearly after a few days of use. This liquid fertilizer comes with a quality manufacturer-designed sprayer in a compact bottle for easy use by users.

    With such a design, you can optionally attach it to any other standard garden hose to perform the task quickly and accurately.

    Also, the formula of this liquid lawn fertilizer works on all types of grass. A 32-ounce bottle can use up to 3200 square feet.


    • Suitable for all types of grass
    • Fast performance
    • Works well even in dry weather
    • Convenient design


    • The sprayer is not working well

    Bottom line

    With its dispenser, you simply hook it to the garden hose to use. And after a few days, you will see the lifeless lawn turn green quickly.

    #4. Superior Nitrogen & Potash 15-0-15 – Best for N P K fertilizerBest Liquid Lawn Fertilizer - Superior Nitrogen & Potash 15-0-15

    Product’s highlights

    Next on our list is still a recommendation from Simple Lawn Solutions. If your lawn appears yellow, brown, and patchy, consider this fertilizer.

    Those signs indicate that your property lacks potassium or nitrogen, so provide these substances to make the lawn greener.

    Simple Lawn Solutions has a superior formula to help the grass proliferate and become greener and healthier. Besides, ingredients such as humic acid/fulvic acid work to promote the movement of fertilizer in the ground. It results in a local effect on the entire crop.

    It is these characteristics that enhance its weather resistance both in hot and cold conditions. And you don’t have to worry about its effectiveness in sandy soils; the fertilizer’s formulations make it beneficial in all terrains.

    With a 32-ounce bottle of liquid lawn fertilizer, you can treat large lawns measuring 3200 square feet and effectively handle a variety of grasses such as bluegrass and saw palmetto. 

    This fertilizer of Simple Lawn Solutions does not contain harmful chemicals, and the manufacturer commits to all organic ingredients of food quality. So it’s safe for lawns and pets as well as children.


    • Provides potassium and nitrogen
    • Fast performance
    • Beneficial even in sandy soils
    • Suitable for many types of grass


    • Phosphate-free

    Bottom line

    Simple Lawn Solutions can provide a lot of nitrogen and potassium to bring green to the lawn quickly. Although it does not contain phosphate, the effect is still pronounced.

    #5. Ultimate 3-18-18 NPK – Best for Compost

    Best Liquid Lawn Fertilizer - Ultimate 3-18-18 NPK

    Product’s highlights

    Next is still a good version of herbs from Simple Lawn Solutions, but the formula 3 – 18 – 18 becomes more special this time. Ultimate 3 18 18 becomes the ideal choice for lawns that suffer from potassium and phosphorus deficiencies with organic ingredients.

    It is the liquid lawn fertilizer recommended for safe and healthy plant growth with the proper potassium and phosphorus ingredients ratio.

    This fertilizer does not contain harsh chemicals and is an all-natural liquid fertilizer. You can use it with your lawn without any worries.

    Users also appreciate the simple application of Ultimate 3 18 18. Like other designs of Simple Lawn Solutions, you only need to perform a few steps to use it. High efficiency, not spending a lot of time and effort is what Ultimate 3 18 18 has.

    Ultimate 3 18 18 delivers fast results. With its potassium and phosphorus content, it can help your lawn quickly turn green again.


    • Suitable for a variety of grasses
    • Easy to use
    • Fast performance
    • Price matching


    • A spray bottle is less durable

    Bottom line

    In general, many people appreciate this liquid lawn fertilizer because of its effectiveness and its natural composition.

    #6. Scotts Turf Builder Starter Food – Best for Growth Stimulation

    Best Liquid Lawn Fertilizer - Scotts Turf Builder Starter Food

    Product’s highlights

    Coming from the Scott brand, this fertilizer quickly attracted the interest of many gardeners. With a 70% faster effect, Scotts Turf Builder Starter Food becomes the ideal solution to stimulate thick and fast grass growth.

    The remarkable thing about this liquid lawn fertilizer is that it is convenient with the grass and only uses grass and soda plugs.

    According to the manufacturer’s recommendations, you can apply Scotts Turf Builder Starter Food when seeding grass. It is even beneficial when dealing with any grass-free areas around the yard.

    With the 32-ounce bottle, you can use it to cover up to 1800 square feet. While this number isn’t too impressive compared to the other liquid lawn fertilizers on our list, it should be enough for you to do with a moderate lawn. 

    Besides, using the Scotts Turf Builder Starter Food bottle is also very simple. It only takes a few steps to attach the hose connector to the spray bottle. When you’re done, just spray and take care of your lawn.

    After testing, we found that you should use Scotts Turf Builder Starter Food for the first application after the seeds have germinated.

    You will continue to perform two times, each time about one week apart, to achieve the best effect. That way, you will surely be amazed at your lawn.


    • Easy to use
    • Good result
    • Improve seed germination
    • Safe


    • Grass needs to be cut short for better effect

    Bottom line

    At a reasonable price, Scotts Turf Builder delivers excellent results for your lawn. Not only that, but it is also simple to use, so you will find it beneficial.

    #7. Environmental Factor 7001200 – Best for Perennial Grass

    Best Liquid Lawn Fertilizer - Environmental Factor 7001200

    Product’s highlights

    Environmental 7001200 is the next fertilizer we would like to introduce. With natural origin, liquid fertilizers are effective and safe for users.

    Formulated to work well for perennial lawns, Gluten provides the protein content needed for lawns to restore and maintain their green appearance. It is similar to other lawn thickening liquid lawn fertilizers, and Gluten can prevent the growth of annoying weeds.

    However, this fertilizer is not suitable for newly sown seeds because the formulation of this fertilizer hurts the germination of seeds.

    With one quart of Gluten Powder, you can mix it with water and cover a 1000 square foot lawn. We want to remind you at this step that you should mix according to the manufacturer’s instructions. 


    • Good for perennial lawns
    • Great range
    • No assembly required
    • Easy to use


    • Not good for sprayers

    Bottom line

    Although Environmental Factor 7001200 Green It Liquid Corn Gluten only scores 3.9/5 stars on Amazon, we can’t complain about its effectiveness. In general, the low ratings are due to people’s failure to spray when used with this fertilizer.

    #8. Scotts Liquid Turf Builder – Best for Safe Lawn Care

    Best Liquid Lawn Fertilizer - Scotts Liquid Turf Builder

    Product’s highlights

    Scotts Liquid Turf Builder is designed with a spray head ready for you to perform lawn care and treatment at any time. In other words, you do not need any additional tools and can immediately use the product.

    In particular, this liquid fertilizer is safe for all types of grass, so since its launch, it has become a highly sought-after lawn fertilizer.

    Convenient design allows you to connect to a garden hose. That way, you can water your lawn for a while.

    Yet, we want to remind you that it works very slowly, you will have to wait a long time. You need to do more than one watering per year to be effective.

    Scotts is the ideal liquid fertilizer for newly planted turf because the active formula thickens the lawn. It makes an excellent choice for new properties or hay or seed plants.

    The nutritional ingredients of Scotts liquid fertilizer will go directly to the root and stimulate the growth of new plants. Therefore, you can use this lawn fertilizer to enhance the nutrients for the grass throughout the growing season.

    Compared to granular liquid lawn fertilizers, Scotts liquid fertilizer delivers 35% faster efficiency. One thing we weren’t satisfied with, however, was that one bottle could only be used on 600 square feet of lawn.

    This liquid fertilizer cannot meet the requirements of large lawns, so you may want to consider the width of your property.


    • Ready-to-use design
    • Good for newly sown grass
    • No need to mix


    • Slow effect
    • Only 600 feet

    Bottom line

    Scotts Turf Builder is ideal if you don’t want to mix anything. With a spray-ready spray bottle design, you can use it right out of the box. Although the effect is slow, we cannot deny the excellent impact of fertilizer.

    #9. VPG Ferti-Lome Iron Liquid – Best for Iron-Deficient Lawns

    Best Liquid Lawn Fertilizer - VPG Ferti-Lome Iron Liquid
    Product’s highlights

    VPG Ferti-Lome Iron Liquid Plant Food is the perfect choice for lawns experiencing an iron deficiency. The main ingredient in the formula is liquid iron consisting of 0.15% Manganese chelate, 0.16% zinc chelate, 0.5% chelated copper, and 3.25% iron chelate.

    With such a formula, VPG Ferti will provide the optimal solution for the lawn. Not only for properties lacking iron, but this lawnstar chelated liquid iron fertilizer also affects citrus trees, shrubs, trees, houseplants, and flowers.

    However, you should note that this fertilizer is not complete, so it cannot be used with organic liquid lawn fertilizers. 

    In general, with the formula of VPG Ferti-Lome Iron Liquid Plant Food, you can correct the nutrient deficiency of the lawn, especially when it shows signs of yellow or brown grass.

    In addition to high efficiency, we have a recommendation for you to use this liquid nitrogen fertilizer throughout the growing season of the grass. Specifically about every eight weeks, so you will be surprised at the results.


    • Good for iron-deficient lawns
    • Cheap
    • Easy to use
    • Apply a variety of grass


    • Do not use nitrogen liquid lawn fertilizers

    Bottom line

    With an excellent combination of minerals, VPG Ferti-Lome Iron Liquid Plant Food becomes an effective solution to iron deficiency lawn problems. Moreover, the low price is perfectly suitable for anyone on a tight budget.

    #10. Medina 12-4-8 Ready-to-Spray – Best for Optimal Design

    Best Liquid Lawn Fertilizer - Medina 12-4-8 Ready-to-Spray

    Product’s highlights

    Medina 12-4-8 Ready-to-Spray HastaGro Lawn possesses the excellent 12 – 4 – 8 liquid formula of the Medina brand. The manufacturer has designed it as a pre-spray product with safe ingredients to get your lawn green in no time.

    We like most about these liquid grass fertilizers’ spray bottle designs with a reusable nozzle. That’s right, as soon as this design hits the market, it has received many positive reviews because it is extremely environmentally friendly.

    Not stopping there, the manufacturer offers a good choice for lawns with extensive coverage of up to 4000 square feet. So with just one bottle of Medina 12-4-8 Ready-to-Spray HastaGro Lawn, you can take care of a large lawn.

    According to the manufacturer’s recommendations, you should use Medina 12-4-8 Ready-to-Spray HastaGro Lawn monthly between spring and fall for better results. Moreover, you should take advantage of the wet grass in the early morning to apply fertilizer to the grass. Because of that, the fertilizer will mix with water and quickly penetrate the ground to promote its full effect.

    However, the bottle design that is difficult to operate is a significant drawback. Also, many users complain about the bottle top not creating water tightness with a garden hose. It does not create conditions for users to use comfortably, so the rating on amazon is not high.


    • Fast performance
    • Safe
    • No assembly required
    • Great coverage


    • Difficult to use

    Bottom line

    Medina 12-4-8 really possesses the optimal design for lawn use and care. If you are a person who likes neatness and intelligence, it is a suitable choice.

    #11. Southern Ag 01952 Liquid Iron – Best for Performance

    Best Liquid Lawn Fertilizer - Southern Ag 01952 Liquid Iron

    Product’s highlights

    The last suggestion on our list is Southern Ag 01952 Chelated Liquid Iron. Although this fertilizer is not as prominent as the other liquid lawn fertilizers on this list, it positively affects your lawn.

    With a formula that solves the problem of lifeless lawns, Southern Ag 01952 Chelated Liquid Iron becomes one of our ideal choices. This fertilizer can turn the lawn greener than ever.

    Having impressive scores on amazon, users appreciate the use of Southern Ag 01952 Chelated Liquid Iron. It can make a big difference to iron-deficient lawns. Moreover, the effect is also rapid when it only takes about one week of waiting.


    • Good for all plants
    • Fast performance
    • provide iron
    • Easy to use


    • Easy to get hands dirty

    Bottom line

    Southern Ag 01952 Chelated Liquid Iron is a good value for money option. It gives quick results after only one week, and the iron lawn will be green again easily. However, when using it, you should wear gloves to avoid getting dirty.

    Buying Guide

    To buy the best lawn liquid fertilizer, it is best to consider their effects and how they work. You still need to take note of some factors.

    Characteristics of the land

    You need to evaluate the soil characteristics to choose the right fertilizer. What you need to check is for any nutrient deficiencies in the soil.

    That way, you will make correct addition and editing decisions. You can take soil samples to your local nursery, where they have the equipment to analyze.

    Granular fertilizer or liquid form

    Liquid fertilizer is usually more expensive; however, we can’t complain about its accessibility to detail and coverage. So in most cases, liquid fertilizer is the optimal choice for a faster effect.

    However, if you choose an organic liquid fertilizer for lawn care, it must be done more often to get good results. Although they last longer than granules, the effect is not as long-lasting in the warmer months.

    When to fertilize

    Liquid fertilizer does not last long; you need to be careful about when to fertilize.

    • If you only want to fertilize once a year, choose Labor Day. At this point, your lawn will need more nutrients to accumulate during winter and fall.
    • If you fertilize twice a year, choose February and October. In October, you provide food for the lawn to prepare for winter, and February will feed the property after the cold winter.
    • When it is a year-round fertilizer, you should add more minerals in the spring. Because at this time, the green plants grow slowly and can not absorb too many nutrients.

    Besides, you should fertilize early in the morning and don’t apply at the hottest time. High heat will cause your plants to burn in the process. You should make the soil moist before fertilizing so that the grass can absorb it faster.

    Selection by stage

    The supply and balance of nutrients will help you maintain the best liquid grass fertilizer.

    It won’t take you too long to turn your lawn into a lush green with liquid fertilizer. However, society is increasingly developing, so besides liquid fertilizer, you have countless other options, including granular fertilizer.

    Options come from many different manufacturers with different effects and effects. In this case, you need to choose the right fertilizer for each season and stage of lawn growth.

    That way, your lawn will be beautiful all year round. All you need to do is learn about the supply and effectiveness of that fertilizer.

    For more details, take a look at the expert’s sharing in the video below. Most likely, they will be useful to you.


    How To Apply Liquid Fertilizer To Lawn?

    There are many ways to apply liquid fertilizer to your lawn, but attaching it to a garden hose is simplest. Most packaging models from liquid to organic and synthetic liquid lawn fertilizers have an attachment design near the nozzle.

    Before watering, you just need to manipulate mixing the appropriate amount of fertilizer into the water to make it easier to penetrate.

    When To Apply Liquid Lawn Fertilizer?

    The right time to apply liquid fertilizer to plants depends on the type of fertilizer you are using. Manufacturers always print application instructions on product packaging, so be sure to read it to know precisely when to apply fertilizer.

    There are liquid lawn fertilizers on the market for spring, summer, or even year-round use. The manufacturer recommends some products specifically for each season, so we think it’s best to follow the recommendations.

    If you use the wrong indication, your grass will have problems. For example, applying liquid nitrogen to the grass in the peak summer will cause the lawn to burn. The recommended time is early morning, or you should use organic fertilizer instead.

    How Much Liquid Nitrogen Fertilizer To Apply?

    There is no specific answer because the answer depends not only on the size of the lawn. But on other weather factors, the number of nutrients needed for the grass, the type of grass, the kind of fertilizer.

    For example, if you apply too little fertilizer, you should not trust the lawn to grow as expected. On the contrary, if used too much, it will have the opposite effect and cause damage to the grass.

    Using Weed and Feed as Part of Lawn Care

    If you own a lawn, then weeds and feed will be undesirable. They create good conditions for crabgrass, clover, and dandelions to grow.

    You can use them as nutrients for your lawn products, but not everyone likes them. Although there are herbicides for these weeds, if misused, they will destroy your entire lawn.

    Not only that, many people do not want to put toxic chemicals on the property, especially those who use the lawn for children and pets to play.

    One way to reduce weeds and feedstock is to adopt an organic lawn maintenance method. It is not only environmentally friendly but also helps you improve the structure of the soil effectively.

    How Often to Apply Liquid Fertilizer on Your Lawn?

    Fertilizer frequency is usually a maximum of 4 times during the growing season. Specifics will depend on the state of your lawn.

    Unlike granular fertilizers, the best liquid fertilizers penetrate quickly and provide immediate results, so you should carefully consider the condition of the property to get the right frequency of application.

    Do You Have The Necessary Equipment For Liquid Application?

    You can apply several devices to distribute fertilizer evenly over a large area. In particular, these devices allow you to use the proper ratio to bring about high efficiency when taking care of your lawn. However, the cost to buy them is not cheap, so consider carefully.

    Is lawn fertilizer safe for a vegetable garden?

    It is not safe, so we do not recommend using lawn fertilizers for vegetable gardens. Liquid lawn fertilizers can contain herbicides, pesticides that are harmful to plants and your health.

    More to read: Should I Apply Lawn Fertilizer On Vegetables?

    Final Words

    Above is exciting information about the best liquid lawn fertilizer that we want to share with you. The provision of necessary nutrients is essential, but liquid fertilizer will get the effect faster.

    Hopefully, you will find the right product via this article of Swipe Garden. For a beautiful green lawn, pay attention to every detail and, importantly, fertilizer.

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    Granular Vs Liquid Fertilizer – Pros & Cons

    Some Tips When Using Liquid Fertilizer

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