7 Best Liquid Fertilizer For Your Garden

The best liquid fertilizer is the key to keep the foliage always lush and healthy, but choosing the right type of fertilizers is way more important.

Even if you know that you need liquid plant food, countless available options on the market may confuse you.

Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter...
9,819 Reviews
Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter...
  • Grow plants twice as big compared to unfed plants with the...
  • Feeding is as easy as watering - just attach a bottle of...
  • Apply our liquid fertilizer to the soil surrounding the base...

Our favorite fertilizer today is the Miracle-Gro. It deserves to win given the effective performance and affordable price. Plus, it is extremely easy to use with the irrigation system.

Best Liquid Fertilizer Reviews

Miracle-Gro Liquid Plant Food – Best Overall

Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter...
9,819 Reviews
Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter...
  • Grow plants twice as big compared to unfed plants with the...
  • Feeding is as easy as watering - just attach a bottle of...
  • Apply our liquid fertilizer to the soil surrounding the base...

The liquid solution comes in a 16-ounce bottle, enough to get your flowers and veggies thriving. It comes with a garden feeder and a dosing spoon, very helpful in feeding with a watering can.

What you need to do is to attach the feeder to the garden hose. Then insert the refill bottle into the feeder and feed your plants as you water. Feel free to switch to the water setting by turning the dial.

On the negative side, this sprayer is rather not durable, requiring you to be extra careful not to break it.

It’s best to always keep it clean since the hole the fertilizer goes through is small and clogs easily.

What We Like

  • Feed and water simultaneously
  • Easy to use
  • No hand fatigue

What Can Be Improved?

  • Improvable durability

Fox Farm Instant Concentrate Grow Big Liquid Plant Food – Best For Forgiveness

Fox Farm FX14092 Grow Big Liquid Concentrate Fertilizer,...
3,663 Reviews
Fox Farm FX14092 Grow Big Liquid Concentrate Fertilizer,...
  • Get your garden going with grow big, Foxfarm's liquid...
  • Grow big contains earthworm castings, Norwegian kelp and...
  • Garden tip: allow new plantings a few days to settle in,...

It is designed to let your garden grow big. Specifically, it supplies essential micronutrients to enhance plant size and structure.

The product works with many types of plants, from herbs, tomatoes, squash to peppers. If you want to have lush foliage, do not skip such a great fertilizer.

However, make sure to measure the nutrients properly. If not, you may cause the plant roots to burn.

This one-pint bottle will last more than 1 season unless you are doing some serious gardening. Although, you have to use it more than one time to see how well it works.

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What We Like

  • Applicable to many plant types
  • Lush and vegetative growth
  • Extremely forgiving

What Can Be Improved?

  • Synthetic ingredients

GrassSoGreen Maintenance Formula – Best For Environment

American Hydro Systems GrassSoGreen Maintenance Formula,...
518 Reviews
American Hydro Systems GrassSoGreen Maintenance Formula,...
  • Automatic System: Our innovative liquid fertilizer is...
  • Worry-Free Formula: Our liquid fertilizer consists of...
  • Mother Nature Approved: Our environmentally friendly...

It is an environmentally-friendly option from Grass So Green. It boasts the 19-0-0 formula, reducing run-off waste and over-application.

This nitrogen-rich formula will supply nutrients to your plants every time you use the irrigation system. Your lawns will be green and strong throughout the year.

One notable thing about the Grass So Green formula is its versatility. It is applicable to both cool and warm-season grasses.

As an added perk, it will not burn or leach out of the soil like other chemical fertilizers.

The solution can be fed into the irrigation system easily through an automatic injection or siphoning system. What you need to do is to fill the tank, and that’s about it.

Additional to the overall appeal, this plant food is covered with a money-back guarantee if you are not satisfied with its performance.

What We Like

  • Environmentally-friendly formula
  • Applicable to both cool and warm-season grasses
  • Money-back guarantee

What Can Be Improved?

  • N/A

SUPERthrive Plant Vitamin Solution – Best For Versatility

This product works to invigorate foliage grown anywhere, from normal gardens to container gardens, even hydroponics.

It gives the plants vitamins to build a strong root base and reduce transplant shock. It is essential to maintain healthy and attractive landscaping.

There are 4 sizes for you to choose from, namely 4 ounces, 1 gallon, 2.5 gallon, and 5 gallon. Which one is suitable depends on the size of the area you want to treat.

According to the manufacturer, you need to measure the plant food by drops per gallon. You need to purchase a dropper separately, which is a minus.

What We Like

  • Non-toxic ingredients
  • Vitamin solution
  • Four sizing options

What Can Be Improved?

  • No dropper provided

Scotts Liquid Turf Builder – Best For Ease Of Use

Scotts Liquid Turf Builder with Plus 2 Weed Control, Liquid...
  • Scotts Liquid Turf Builder with Plus 2 Weed Control kills...
  • Liquid weed killer plus fertilizer controls dandelion,...
  • Apply this ready-to-spray when weeds are actively growing

If your lawn grass turns slightly yellow with some weeds in the surrounding, do not hesitate to use this Scotts liquid fertilizer.

This product works as effectively as any high-quality weed killer on the market. It kills dandelions, clover, buckhorn, henbit, oxalis, and many other lawn weeds.

It is incredibly easy to use. Simply connect the sprayer to the hose, turn on the water, and spray it directly on the lawn.

Make sure you spray when the weeds are actively growing to achieve the best results. Spray the solution evenly over the treated area, starting with the furthest point.

What We Like

  • Nutrient solution and weed killer
  • Incredibly easy to use
  • Quick to show results

What Can Be Improved?

  • Leaking issues

Southern Ag Chelated Liquid Iron – Best For Iron Supplement

Southern Ag Chelated Liquid Iron, 16 OZ Size: 16 OZ
  • Size: 16 OZ
  • Corrects Iron deficiency in flowers, vegetables, shrubs and...
  • Use in lawns for a deep, rich green color.

Southern Ag is a famous brand when it comes to fertilizers. Therefore, you can rest assured about the quality of this chelated liquid nutrient solution.

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It will correct iron deficiency in grasses, flowers, veggies, and trees. Any yellowing foliage will turn green quickly with a little of these chelated liquid iron.

For application, dilute the liquid with water and apply as a drenching spray. Make sure to use gloves; otherwise, the smell would not come off your hands.

16 ounces are not much, but it is more than enough for spot treatment. Nonetheless, you may need a much bigger bottle if you plan to treat a large area.

What We Like

  • Iron deficiency combat
  • Applicable to many plants
  • Easy to use

What Can Be Improved?

  • A bit hard to pour

Botanicare Silica Blast – Best For Silica Supplement

Botanicare Silica Blast, Plant Supplement, 0-0-0.5, 1 qt.
  • Botanicare Silica Blast 0-0-0.5 is a supplement that helps...
  • Silicon may aid in strengthening plant tissue
  • Use this supplement during the vegetative, transition, and...

This Botanicare liquid fertilizer works with all types of plants, and more notably, it is ideal for hydrogardens or container gardens.

Silica is a beneficial nutrient that strengthens plant tissues and helps them thrive under any environmental condition. With this Silica Blast fertilizer, your plants can flourish even in adverse climates, for example, drought and frost.

While this product is ideal for hydrogardens, you can also add it to outdoor plants during extreme weather conditions, such as peak summer months.

It gets even more effective if you combine this liquid fertilizer with other Botanicare lawncare products. Your plants will have strong stems and branches to thrive for seasons to come.

What We Like

  • Silica supplement
  • Applicable to all plant types
  • Ideal for hydrogardens

What Can Be Improved?

  • Missing cap issues

A Detailed Buying Guide For Best Liquid Fertilizer

What Is Liquid Fertilizer?

A liquid fertilizer is a concentrated solution that feeds your plants instantly through the soil. It brings about visible results within a few days.

Nonetheless, long term treatments are necessary with this type of fertilizer due to the liquid base. Each feeding might last from 1 to 3 months, depending on your lawn care purposes.

Why Should You Use Liquid Fertilizer?

It ensures even distribution over the treated area. The spray bottle and the hose help you spray the plant food evenly, which is especially helpful in lawn care. The liquid fertilizer also can nourish plant roots more effectively.

Moreover, the liquid form allows you to dilute the fertilizers based on your needs. It means you can customize the plant food to feed the lawn most effectively, according to the soil structure, root strength, and so on.

The liquid lawn fertilizer is extremely easy to apply. Simply attach the bottle to a hose, and you are good to go.

Best Liquid Fertilizer For Your Garden

How To Choose The Best Liquid Fertilizer

How large is your lawn?

Liquid fertilizers are ideal for large-sized lawns since they cost less while offering almost the same effectiveness as granular fertilizers.

Depending on the size of your lawn, you will choose the suitable amount of plant food. These fertilizers are often available in bottles that hold from as little as 16 ounces to 1 gallon.

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Do you need instant results?

If yes, you should undoubtedly get a bottle of liquid plant food. It is the quickest way to correct vitamin deficiency and get your lawn looking lush and attractive in no time.

But in case your lawn is already healthy, and you only want some supplements, even the best liquid fertilizer may not live up to your expectations. Opt for granular instead if you want long-term maintenance.

Best Liquid Fertilizer For Your Garden

Does your turfgrass have a weed problem?

Some multi-purpose fertilizers supply nutrients and control weeds simultaneously, for example, the Scotts Turf Builder above.

If you find weeds dominating your lawn, you may want to choose a 2-in-1 liquid fertilizer to recover your grass to its healthy self quickly.

Liquid Vs. Granular Fertilizers

Spatial Difference

This factor refers to the distance from the plant roots to nutrients in which absorption can take place.

In this case, the grass liquid fertilizer has an edge over its counterpart. It allows the plants to absorb the nutrients more effectively.

For example, phosphorus is a slow nutrient that has a hard time finding its way to the plant roots. The liquid form provides a solution to this problem since the nutrients are free to move along the soil.

Salt Content

Since the granular fertilizer provides a slow release, it needs to keep the nutrients for a longer period. This requirement results in high concentrations, and hence high salt content.

Best Liquid Fertilizer For Your Garden

Young plant roots may find the fertilizer “hot” and steer clear from the nutrients. Thus, if your turfgrasses are young, you may need liquid fertilizer for lawns instead of granular.


In liquid lawn food, each drop contains the same percentage of nutrients.

In contrast, the amount of nutrients are not always consistent with each dry pellet of granular fertilizers.

What We Like and What Can Be Improved?


Liquid lawn fertilizer

Granular fertilizer

What We Like

  • Even application
  • Easy to apply
  • Seasonal variances available
  • Easy to store for a long time
  • Slow release
  • Effective for pre-planting

What Can Be Improved?

  • Not for long term maintenance
  • Need to dilute
  • Hard to apply evenly

Frequently Asked Questions

Q: Which type of liquid fertilizer should I use: nitrogen or potassium?

A: Each nutrient serves a different purpose, so which one to choose depends on the condition of your turfgrass. For example, nitrogen’s main purpose is to achieve green leaves, while potassium’s is for flowers’ splendid blooms.

On top of that, there is phosphorus liquid plant food for well-developed roots. Meanwhile, magnesium, calcium, and sulfur will keep the foliage always healthy.

Q: How to use liquid lawn fertilizers?

A: The easiest and quickest way is to attach the bottle to the garden hose. Many products come with the attachments, for example, the Miracle-Gro.

Q: How much liquid fertilizer should I use?

A: The right amount depends on many factors, including the type of grass, your lawn conditions, and the fertilizer formula.

When applying the fertilizer for grass, make sure that you spray it evenly over the grass. Otherwise, you may end up with a patchy lawn, which consists of brown patches in some areas and lush blades of grass in others.

Q: How often should I apply liquid fertilizer on my lawn?

A: Generally, it is recommended to fertilize your lawn twice a year in spring and early fall. In spring, the plants need vitamins to grow lush and green.

On the other hand, the second application will supply nutrients to help the foliage survive the cold days. But if you find your turfgrass turning yellow, you can give them a quick boost of nutrients right away.

Let’s watch how to make liquid fertiliser & black gold:

Parting Thoughts

From our perspective, the best liquid fertilizer is the Miracle-Gro. It is effective, easy to use, and affordable.

If you have any questions, feel free to leave them in the comment box. We are eager to help you out.

Last update on 2024-05-23 / Affiliate links / Images from Amazon Product Advertising API

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Jill Sandy

I am a sustainable focus gardener. I love decorating my home backyard with beautiful landscape design and creative garden care techniques I develop myself.

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