5 Best Liquid Fertilizer for Grass in Summer

My wife is often worried about the condition of the lawn grass because she adores it so much. She worries about maintaining the lawn’s lush greenness as summer approaches. Perhaps your wife, mother, or aunt are similarly anxious about it. Here I listed the 5 best liquid fertilizer for grass in summer over the market. They are all outstanding in terms of performance, efficacy, cost-effectiveness, and environmental sustainability. Each has unique qualities that make them all the greatest.

5 Best Liquid Fertilizer for Grass in Summer

It’s pretty fair to be concerned throughout the summer because the high temperatures and low relative humidity significantly negatively impact the lawn’s health, especially when the grass starts to burn or turn yellow. As a result, different fertilizers are needed at different times of the year to maintain lawns, gardens, or plant life under green conditions. Liquid lawn fertilizers have completely changed the game! They can keep your lawn looking nice and green.

I am here to assist you to choosing the best liquid fertilizer for grass in summer no matter your requirements; I will cover everything. I consider the fertilizer ingredients, their effectiveness, performance, cost, the level of customer satisfaction, and thousands of customer reviews around the primary online platform before choosing any products to take into my selection list. Let’s look at my best 5 liquid fertilizers for grass in summer. 

Simple Lawn Solutions- Extreme Grass Growth Lawn Booster

I have used Simple Lawn Solutions Lawn Booster for my lawn and as a part of the trial, along with my friend Adam’s Lawn.

First, the advanced blend of humic and fulvic acids and the 6-18-0 N-P-K ratio has succeeded in progressing root development and overall grass growth. It is also excellent for new sod or seedlings and a meaningful lawn thickness and exposure improvement within a few weeks. 

Another benefit is that it provides essential phosphorus to develop increased seedling vigor, which is highly suitable for seeding lawns.

As a significant component of chlorophyll, the 6% N ensures robust growth for improving a well-dense lawn, and the included 18% P fosters root development and hastens vigorous grass, which is necessary for successful seedlings and sod construction.

In addition to that, its application is straightforward and must be mentioned. I obtained consistent coverage and precise product distribution using a hose-end or backpack sprayer. Due to the compatibility with other Simple Lawn Solutions products, fertilizers or weed control might be applied simultaneously, saving time and effort.

The only downside of the Simple Lawn Solution is the cost, which is comparatively higher than other liquid fertilizers, which may discourse some budget-conscious customers.

The simplicity of use and interoperability with other goods were essential advantages. I recommend this lawn booster to anyone looking for quick, significant increases in their lawn’s thickness and handsome improvement despite the increased expense and lack of some trace elements.

How to apply:

Connect the bottle to your garden hose to begin applying the fertilizer. It works on all varieties of grass. It will cover up to 3200 square feet per bottle.

Simple Lawn Solutions- Extreme Grass Growth Lawn Booster

Scotts Liquid Turf Builder Lawn Fertilizer 29-0-3

My mom has been using Scotts Liquid Turf Lawn Food since 2019 in her lawn to keep the lawn evergreen and healthy.

It is a 2 in 1 product that allows nutrients across your lawn along with its built-in hose pipe. It is a high nitrogen fertilizer containing a 29-0-3 N-P-K ratio and is made to be applied around the season. Moreover, it features a ‘greening agent’ to give your lawn a lush green expression.

The Scotts Turf Builder is simple to use; you depress the on/off lever on top of the bottle with your thumb to control the water flow.

Depending on the pressure of your hose, a 32 fl oz bottle can cover up to 2,000 square feet of lawn. The liquid fertilizer is drawn out by water flow; therefore, the faster the flow, the more quickly the fertilizer will disseminate.

How to Use:

Connect your water hose pipe to the back of the bottle and activate the trigger spray. Water until the whole area covers. Once you have done this, release the water pressure and disconnect the bottle for further use. It can be applied to all types of grass.

Scotts Liquid Turf Builder Lawn Fertilizer 29-0-3

Advanced 16-4-8 Simple Lawn Solution Liquid Fertilizer 

Last month, I used Simple Lawn Solutions Advanced containing a 16-4-8 N-P-K ratio on my lawn, and I am satisfied with the feedback. The liquid fertilizer is easy to use through my hose-end sprayer, allowing the entire lawn coverage. 

One thing that was really appreciated was the quick absorption of nutrients. I observed an essential improvement in my lawn’s color and physical conditions within a short time, which was truly fascinating. The balanced N-P-K ratio was appropriate for my yard and effectively met the nutritional requirement. 

Another reason to choose this product is its seaweed and fish components provide extra micronutrients and improve overall soil health. The 8% potassium increases plant tolerance to excessive drought or temperature and plays a significant role in the transfer of nutrients and management of water.

However, its high price compared to other liquid fertilizers in the market may seem to you as a drawback. Still, it is worth the price due to its organic compounds and ease of application properties. 

In a nutshell, Simple Lawn Solution Advanced Liquid Fertilizer offered intended results for my lawn, and an easy application process is a prime benefit. Though the price is a slight limitation, it is worth the value of money and offers tremendous performance.

How to apply: 

The 32-ounce liquid fertilizer is compatible with all grass types and covers up to 32,00 sq ft. Screw it to your garden hose pipe for quick and smooth application during spring and summer. Ensure your lawn grass is sufficiently watered before spraying to ensure maximum nutrient absorption. 

Advanced 16-4-8 Simple Lawn Solution Liquid Fertilizer 

Scotts Liquid Turf Builder Ready To Spray Fertilizer

My brother, Marcus, has been using Scotts Liquid Turf Builder for 5 years on his lawn and is never disappointed by it. It comes with a ready-to-spray hose-end attachment to ease the application process. That means you don’t need to mix, so you can use the fertilizer after receiving it. The product is compatible and safe on all grass types. 

The Scotts liquid lawn fertilizer is suitable for improving the thickness of newly planted grass, introducing it as an impressive choice for new lawns whether you planted seeds or sod. It works directly to reach the root zone and hasten new growth. This product can help even healthy lawns that need a boost of nutrients throughout the growing season.

I observed that it provides 35% quicker results than granular fertilizers. And the most important thing is that you don’t need to spend additional money to kill dandelions and clover grass. I used it last week on my lawn and was a little bit worried due to unexpected heavy rain after I sprayed it, but openly that’s an impressive thing, as within a few days, all the dandelions were dead.

How to Apply:

The bottle can cover up to 6000 sq ft ( 32 oz. 2 pack). Connect the bottle to the garden hose pipe and spray it on your lawn. However, consider that results take time, and several applications must be made yearly.

Scotts Liquid Turf Builder Ready To Spray Fertilizer

Covington Naturals Liquid Lawn Aerator 

If you find another best quality liquid lawn fertilizer in summer and aerator simultaneously, I recommend this Covington Naturals Lawn aerator. The primary reason the lawn is brown and dry is low aeration levels in the soil. 

Your grass needs air to flow around the roots to thrive, and if the soil becomes compacted, it suffocates your grass. This product not only feeds your grass but also promotes aeration in the ground, eliminating compaction across the roots of your lawn.

This liquid aerator helps to shorten soil compaction, improving air, water, and nutrient penetration to the grassroots. The aerating actions hasten your lawn’s compaction of mud and drainage and avoid soggy conditions around the grassroots.

The Covington Aerator is a sophisticated blend of minerals, essential nutrients, kelp, humic acids, amino acids, healthy microbes, carbs, and a synergistic combination of bacillus strains.

It is non-toxic and safe for animals or pets, and no time is required for penetration. It comes with a 32-ounce (.946 liters) bottle that can treat from 12000 sq. ft. to an acre, depending on the soil conditions of your lawn. When it might seem like an expensive product in this list, you get outstanding value for money liquid fertilizer for grass.

How to Apply:

You are discouraged from applying it in the afternoon to get the best result in the morning, performing decreased evaporation and greater efficacy. The manufacturer provides a 90-day money-back guarantee, so you can purchase it without any fairness. 

Covington Naturals Liquid Lawn Aerator 

Things To Consider While Choosing Liquid Fertilizer for Grass in Summer (Buyer’s Guide)

When selecting a liquid fertilizer for grass from a branch of product options, several things need to be taken into consideration to ensure a healthy lawn, optimum growth, and saving money. Each factor directly influences the fertilizer’s efficacy and the overall health of your yard. Considering all your requirements, I am here to assist you so that you can purchase the best liquid fertilizer for grass.

Test Your Soil:

Before purchasing a liquid lawn fertilizer for grass, it’s better to start with soil tests. A soil test helps you identify which nutrients are in poor conditions essential for optimal lawn growth and overall health. 

You can go to the local nursery for soil analysis. The nursery sends it to the lab for soil testing and then calls you with the result and recommendations. The test analyzes the nutrient level, especially nitrogen, and potassium, followed by the pH of the soil. Soil with high pH value requires iron-based fertilizer ( for example, Southern Ag chelated Liquid Fe Fertilizer) to make the pH down to the normal range. So it is important to prepare the soil before gardening or fertilized.

If soil testing results show any specific nutrient deficiency, such as nitrogen or potassium, they suggest you purchase nitrogen or potassium-containing fertilizer, respectively. Some nurseries provide DIY soil testing kits if you want to save money on something other than lab analysis.

Grass Type and Climate:

Sometimes different grass types may have distinct nutrient demands and local climate conditions influence the lawn’s nutrient uptake and optimal health. Each product in my list here is compatible with all grass types and summer seasons. 

Application Method:

Make sure the application equipment and your skill level are available to you ( hose-end or backpack sprayer). Consider your liquid fertilizer suitable for your equipment and easy and evenly applied to get the best results.

Additional Ingredients:

Some liquid fertilizers feature additional organic compounds (seaweed, fish emulsion), micronutrients, and soil amendments ( fulvic and humic acid). These additionals can promote soil health and offer extra advantages, but they may influence the price of the products. So if you have no issue with price, then it is better to choose liquid fertilizer with additional organic compounds. 

Environmental Impact: 

Always choose eco-friendly products made with sustainable materials and organic in nature to reduce the adverse effects on the soil, water, ecosystem, and overall environment. Each of the products on my list is eco-friendly. 

Cost and Frequency of Application: 

Liquid fertilizers usually need more frequent application than granular fertilizers, which can influence the overall cost and time. 

Granular Vs. Liquid Fertilizer

So, is a granular fertilizer better than a liquid one? Let’s analyze the difference between granular and liquid lawn fertilizers.

Liquid Fertilizer Pros

Immediate Bioavailability

In a matter of seconds, liquids saturate your soil and leach into the ground, where your grassroots quickly absorb the nutrients. Consequently, you get a quick green appearance and robust effect on your lawn that may be remarkable even after 24 hours. But, granular fertilizers sustain a long time in the soil compared to liquid. 

Even distribution

Liquid fertilizers can be applied to your lawn quickly and equally at the proper concentration because they are either premixed or packaged in spray applicators.

Versatile application

Some liquid fertilizers allow versatile use; you can spray them as foliar for plants and shrubs around your lawn or garden.

Blend with other fertilizers.

Blending liquid fertilizers with other lawn care products is straightforward and allows easy application. 

Liquid Fertilizer Cons

Requires several applications through the season

Liquid fertilizer easily washes apart with lawn drainage and rainy or irrigation water. So, it needs frequent applications for the entire season to store the nutrient level in the soil at optimum conditions. On the other hand, granular fertilizer only dries quickly with drainage water.

Expensive compared to granular options

In most cases, liquid fertilizers are more expensive compared to granular options. Sometimes, you may get double granular products against one liquid. However, liquid fertilizer is less effective and quick-acting than granular fertilizer.

That’s why I recommend beginning with liquid fertilizer in the early growing period and granular fertilizer in the rest of the growing period and winter. 

Short-Lived Results

According to a study from Michigan State University, water-soluble fertilizers produce speedier results. They still need repeated applications in the summer because they don’t persist as long as granular fertilizer.

Liquid Lawn Fertilizer for Grass in Summer FAQs

How often should I fertilize my lawn?

Liquid lawn fertilizer products don’t sustain as long as granular fertilizers. Follow the user manual of the respective products to know how often you should fertilize your lawn. Usually, you may need an overall 4-6 times application of liquid lawn fertilizer to the yard depending on the soil, grass type, and climate conditions.

Can I mow the grass after fertilizing my lawn?

Ensure the fertilizer is absorbed into the soil and dries enough before mowing the lawn. Early mowing can prevent the grass from absorbing all the fertilizer. It’s better to fertilize the lawn after mowing.

Related article: How to mow a lawn like a pro.

Safety Precautions When Handling Liquid Fertilizers?

When you go for handling liquid fertilizers, make sure you wear protective gloves on your hands, a mask, and eyewear. Always keep away your skin, eye contact, and ingestion, including pets and children. Remember to follow the manufacturer’s instructions for proper use, storage, application, and disposal. If any accidental ingestion or exposure happens, find medical attention immediately. 

Proper Storage of Liquid Fertilizer

Liquid fertilizer should always be kept in a cool, dry, well-ventilated place, avoiding heat, direct sunlight, or open flame. Store the container by tightly sealing it to a high place to eliminate spills. Keep in mind the expiration date for disposal following the manufacturer’s instructions. 

When to Apply Liquid Fertilizer

The time of application of liquid fertilizer depends on the products that you’re using. Ensure you read the user instructions on the bottle because each liquid fertilizer is either made for summer and spring or year-round. In most cases, liquid fertilizers are needed in summer or spring to absorb all the nutrients.

Applying liquid chemical fertilizers at noon during summer is strictly avoided as it may burn your lawn grass. During the summer months, it is safer to use liquid fertilizers early in the morning. And finally, ensure your lawn soil remains in moist conditions while fertilizing your lawn for optimal growth and overall health.

Final Verdict

I hope you found the liquid lawn fertilizer you sought that will work best for your grass. Additionally, if you are a novice, the buyer’s guide will help you choose the ideal one based on your needs. However, if you are still unsure and looking for advice, I suggest Scotts Liquid Turf Builder for recently installed lawns. Advanced 16-4-8 Liquid Lawn Fertilizer, on the other hand, is my top pick for any yard, regardless of the type of grass. 

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Jeffrey Bromley
Jeffrey Bromley

Jeffrey Bromley is an experienced lawn care professional with over 13 years in the industry. He is the owner of The Lawn & Landscape Company and the founder of Lawn Gardeners Blog. His passion for lawn care extends beyond his business ventures, with a personal commitment to helping individuals take better care of their yards.

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