The Best Lawn Fertilizer for Summer (Reviews for 2023)

Are you having a hard time choosing the best lawn fertilizer? Get an idea from our top nine fertilizer picks for a lush, thriving lawn in summer.

Sean Stratton | Updated April 23, 2023

Summer is a crucial season when you need to take special care of your lawn and garden. Proper foods and fertilizers are required to ensure your lawn grass looks healthy.

If you want green and lush grass in the summertime, you need the best lawn fertilizer for summer. We put together a list of our top picks for fertilizers for your lawn.

The Best Lawn Fertilizers for Summer

house with beautiful lawn

1. Scotts Turf Builder Lawn Food

Scotts Turf Builder Lawn Food is the best overall grass fertilizer for summer. Its 32-4-0 NPK ratio improves your lawn’s overall health to protect it from future problems. It can be applied to any grass type to help build deep roots.


  • An ideal summer lawn fertilizer for any type of grass
  • One pack covers 5,000 sq. ft.
  • Easy to apply with simple instructions


  • You will need to ensure the proper spreader settings

2. Simple Lawn Solutions Liquid Fertilizer

This ‘Simple Lawn Solutions’ liquid fertilizer is ideal for any type of grass in the summer.

It contains the perfect blend of 16-4-8 NPK (Nitrogen, Phosphorus, and Potassium). It also contains fish and seaweed for extra nutrients. This liquid food for your lawn encourages the growth of green solid grass.


  • A complete NPK summer fertilizer solution for lawns
  • All-in-one solution
  • Strengthens roots


  • You may find the sprayer mechanism a bit difficult.

3. The Andersons 16-4-8 Grass Fertilizer

This is a complete fertilizer package for grasses. It is also effective in a low-rain and high-heat environment.

This Andersons fertilizer is a professional grade choice with fast results. You can see an improvement in the appearance of your lawn in as little as one week. It’s formulated with the perfect blend of 16-4-8 NPK in super fine particles that can feed your lawn for up to 8 weeks.


  • Humic DG notably enriches lawn soil
  • Slow-release nitrogen feeds lawn for up to 8 weeks
  • Can see results in as little as one week


  • Not good for grasses that require higher nitrogen doses.

Also Read: Top Fertilizer for Strawberries

4. Milorganite Nitrogen Fertilizer

This slow-release nitrogen fertilizer feeds your lawn for up to 10 weeks with one application. It provides nutrients at a rate that plants can use, so you don’t need to fertilize as often. The NPK ratio is 6-4-0, covering up to 2500 square feet.

It contains heat-dried microbes from organically enriched wastewater and non-staining iron. These active nutrients help your shrubs, lawns, and flowers to achieve steady growth. Its 4% iron gives your lawns a thick and deep emerald-green look without excessive growth.

If your lawn or garden meets drought conditions frequently, this fertilizer is still a top choice for your lawn. It comes with a non-burning formula and no salts, so it protects your vegetation from damage and doesn’t need to be watered in.


  • Its non-burning formula prevents grass from fertilizer burn.
  • Slow-release; plants won’t need food for up to 10 weeks.
  • No salts make it better for drought conditions.
  • Affordable


  • Results take longer than with synthetic fertilizers
  • Doesn’t contain potassium

5. Scotts Green Max Lawn Food

If you are wondering if a fertilizer could turn your damaged lawn into a lush green lawn overnight! This amazing fertilizer might be the fertilizer of your dream. Scotts Green Max Lawn Food’s dual-action formula shows visible results after two to three weeks.

This best fertilizer to thicken grass contains 5.17% iron that turns your lawn’s yellow or brown spots into a spotless deep green lawn. Also, new thick grasses start to appear after applying the lawn fertilizer. So, if you have weeds taking over your grass, they will be taken over by new grass instead.

It contains potassium and nitrogen to keep your lawn healthy and strengthen grass blades. It comes with 27-0-2 NPK, also known as a ratio of 27- nitrogen (N), 0- phosphorus (P), and 2- potassium (K). Its heavy amount of nitrogen pushes the grass blades to come out, and the amount of potassium helps to maintain healthy grasses.

It has no phosphorus, which means it can’t help the roots. So, if your focus is not on roots but instead just turning your established yellow-brown lawn into a healthy deep green lawn, this one is the ideal choice.


  • Fast results
  • Enriched with nitrogen to ensure a deep green, healthy lawn.
  • Goes perfectly with all grass types.


  • It may stain concrete even when the directions are followed.
  • Not suitable for areas with humidity or hot climates.
  • Doesn’t contain phosphorus

6. Miracle-Gro Lawn Food

This is a high-quality fertilizer that makes your lawn thick, soft, and green.

This nutritious fertilizer contains a high amount of iron and nitrogen, making your grass softer and giving it a green carpet-like look. So, it contains all the things that can turn your yard into the pride of your neighborhood.

One bag of this water-soluble lawn food is enough to feed up to 7,200 square feet. This is comparatively more than other fertilizers. Its low price makes it an excellent choice for a tight budget.


  • Perfectly suits all grass types.
  • Capable of covering a large area at a low cost.
  • Instantly feeds your lawn grasses.


  • Overdose can burn your grass.

7. Simple Lawn Solutions Ultimate 3-18-18

The family-owned company ‘Simple Lawn Solutions’ made this ultimate 3-18-18 liquid lawn fertilizer to strengthen the grass roots on your lawn.

This fantastic liquid fertilizer contains organic nutrients such as phosphorus and potassium that promote stronger roots. As this fertilizer is made of organic products, you don’t need to worry about damaging or burning your lawn due to harsh chemicals.

Also, its 3% Nitrogen encourages the growth of your lawn, so your lawn looks thick and beautiful. It is also safe for kids and pets. Its simple application makes things easy for you when it comes to applying fertilizer.


  • Suitable for all grass types
  • Safe for Pets and Children
  • Turns grass greener quickly


  • The spray mechanism can be difficult to use

8. Scotts Turf Builder Starter Food

Scotts Starter Food promises to make your grass grow 70% thicker and 35% quicker than unfed grasses.

This fertilizer aims to give your lawn a healthy and quick start by aiding the faster development of blades and roots. It also promises good seeding results, and it’s an excellent choice for grass plugs and sod.

It comes with 24-25-4 NPK to provide total nutrition support to your lawn. The high nitrogen and phosphorous levels encourage grass growth and strengthen the roots.


  • Grows new grass thicker and faster.
  • Seeding results get improved; suitable for grass plugs and sod.
  • Suits every grass type.


  • Too much can burn your grass.

9. Urban Farm Fertilizers Liquid Lawn Fertilizer

Ever heard of a hand-crafted, micro-brewed fertilizer? Probably not. Surprisingly, Urban Farm Fertilizers made this liquid lawn fertilizer as a hand-crafted, micro-brewed formula that suits pasture and lawns.

This fertilizer contains a balanced N-P-K level and Iron to ensure both macro and micro nutrition for your lawn. It also contains enzymes, humic acid, and mycorrhizae to benefit your grass.

One gallon of this formula is enough to cover an area equivalent to 5,000 square feet for a minimum of 8 applications. This means just a gallon can easily cover at least 40,000 sq ft of area in total. Also, it goes pretty well with hose-end spraying and a tow-behind tank to make your work much easier.

So, if you are thinking of using liquid fertilizer for your lawn, you should definitely check this one out.


  • Complete nutrition; both Macros & Micros
  • Suitable for all pasture and lawn
  • Large coverage area


  • Results take longer

Final Note

Before selecting the best fertilizer for your lawn, get your soil tested first. This test will let you know what your lawn needs to improve. It could be something as simple as an imbalance of nutrients. Using this information, you can select a lawn fertilizer that best meets your needs.

Written by Sean Stratton

Sean Stratton

Hi, I'm Sean, the senior editor here at Fertilizer Pick. I grew up on a farm in North Carolina and have grown fruits, vegetables, and trees since childhood. While I no longer live on a farm today, I still enjoy spending time on my garden and sharing my knowledge with friends and fellow garden enthusiasts.