This post may contain affiliate links. If you make a purchase using one of these links it means we may earn a small commission at no extra cost to you. Learn More

Best Fertilizers For Corn in 2022 (Buying Guide & Reviews)

Giving a thought to fertilizing your corn during the growth period, but are indecisive about where to start? Thankfully, corn is an easy plant to grow and doesn’t require much fertilizer.

If you don’t know which formula works the best to get the most out of the corn, the starting point is food production.

Fertilizers are a replacement when mother nature struggles to fill nutrients up again in the soil. It is basically the essential mineral for crops. The core of using fertilizer is food production for plants, so they can grow happy and healthy fruits.

Corn grows better in climates 60-80°F and most conducive to a favorable outcome is a 5.8-6.5 pH level. Nitrogen is the head of the department in fertilizer. 

For better pollination, corn tends to grow in warm areas and I would strongly recommend planting it in the springtime somewhere between April 5th and May 5th.

In this article, we’re about to break down and analyze in detail and compare which one seems to do the job better, the contained ingredients, effort, and cost.

How to Select the Best Fertilizer for Corn Plant?

There are many tips for growing the corn plant right. Getting sufficient sunlight is the major priority for successful harvesting 

Even though corn is easier to grow there are important factors to consider when buying if you’re a newbie in the fertilization. Corn mostly needs

  • Nitrogen
  • Phosphorus
  • Potassium
  • Calcium 

Above all is knowing what kind of soil you have, do they already exist in it? Do not over-fertilize because everything excessive won’t end up with a successful harvest. 

The soil needs to have a proper NPK ratio to give delicious corn. Another important fact is to have proper drainage, believe me, none of them will work if the drainage is poor and gathers water. The soil needs to be moistened not wet.

Desirable Nutrients

Just as I mentioned previously nitrogen, phosphorus, potassium, and calcium are essential parts of corn growing. Let’s break each of them down to find out the appropriate amount and what is their role in fertilizing.


Calcium provides strength and plants do ask for it to create good health-conditioned cell walls. Plus, it protects the corn plant against diseases and lacks optimal growth.


Nitrogen is the highest in the rank of nutrients in corn. It is the number one nutrient that needs to be taken into account. The required protein in stems and leaves is provided by the nitrogen. In case of shortage, the leaves may be yellowish shade and stems will feel soft and smooth. 

However, too much nitrogen can surely harm the corn plant, actually, everything excessive will harm the plant.

As the key point, the lack of nitrogen will slow the growth of the corn and make it look sick, plus the affection in flavor is high, instead of healthy corn, you can notice some bitterish taste.

The new leaves will not wilt as quickly because of the old nitrogen added.


Phosphorus helps the corn plant’s fruit, flowers, and seeds be at their best performance. Root rotting will be the least of your concerns and everything related to it will be fine, thanks to the phosphorus nutrient that aims to convey and absorb the kept-in-reserve energy.


Potassium helps the corn to continue to have water and nutrients in peak heat and harsh temperatures. It also can resist pests, insects, fungi, and bacteria by keeping the stem and leaves much stronger.

If the corn plant lacks potassium, it weakens the stem and produces less delicious fruit.

Pick the Best Fertilizer for Corn

Now that choosing became clearer and you know what to look for, I have made a list of the best fertilizers with a different NPK ratios. 

NPK ratio stands for the percentage of the certain fertilizer that contains the amount of nitrogen (chemical symbol N), phosphorus (P), and potassium (K). For instance, a 16-16-16 fertilizer inside has 16% nitrogen, 16% phosphorus, and 16% potassium.

Bear in mind that the same fertilizers are used in every other plant, not just for corn.

1. Easy Peasy Urea Fertilizer- Highest Nitrogen Quality

As I mentioned previously, nitrogen is the highest in the rank of nutrients and Easy Peasy Urea has a 46-0-0 nitrogen ratio.

You can use the fertilizer for pretty much everything, garden, flowers, shrubs, trees turf, and many other plants including corn.

For general use, just 1 pound (2 1/2 cups) of Easy Peasy Urea for 100 square feet for 2 inches from the soil and be careful to spread evenly.

The best time to feed corn with nitrogen is when it reaches 12 inches tall.

Why Should You Buy It?
It has the highest rank of the most needed element nitrogen. It’s easy and safe for shrubs and other garden plants.

Check Price On Amazon

2. Burpee Organic Blood Meal Fertilizer-Best for Pest Control

Blood Meal fertilizer by burpee organic is a starter pack fertilizer for the healthy growth of gardens, veggies, and beautiful flowers.

The soil health is 12-0-0 formulation is a concentrated source of nitrogen that also supports soil microorganisms that keep soils and plants healthy.

Corns are heavy feeders and this fertilizer is the perfect meal for vegetables because of the organic source. It will promote healthy growth.

Pest control is amazing because the blood feeling makes the undesired animals like deer, rabbits, moles, and other pesky gardens

Here is how to use the Blood Meal fertilizer For corn and other vegetables, add 1 cup of very 20 square feet of yard zone and work into the soil. Apply this for newly-planted vegetables.

For established corn plants, other veggies, and flowers use 2 cups of fertilizer for every 20 square feet of yard zone and make it work in the soil.

Why Should You Buy It?
The conveyed blood feeling makes animals and pests to stay away from your vegetables.

Check Price On Amazon

3. Osmocote Smart-Release Plant Food- All Inclusive Essential Nutrients

Osmocote Plant Food has 11 essential nutrients and works with almost all plant types in all stages of growth. The nice bonus is that the fertilizer works with indoor and outdoor plants.

This fertilizer consists of a granule coated with semi-permeable resin. The coating lets water infiltrate the granule and dissolve the essential features of nutrients succinctly.

Remember, more nutrients are absorbed during the peak heat, not in cooler temperatures. 

Get 1 scoopful of fertilizer per 2 gallons of water or 4 square feet. Then, mix the top between 103 inches of soil, and lastly, water the plant.

Why Should You Buy It?
It works well with outdoor and indoor plants, small containers, and pots. Plus, it is nutrient rich containing 11 essential nutrients formula.

Check Price On Amazon

4. Down to Earth Organic Bio-Fish Fertilizer- Best Overall

Down To Earth’s Bio-Fish acts like a rich nutrient fertilizer with a 7-7-2 ratio. It’s ideal for corn and other types of vegetables to be used during the growing season. 

For vegetable gardens and beds add 5 pounds per 100 square feet and mix well for about 3 inches deep into the soil. In case you intend to transplant the corn, apply ¼ cup per hole, and mix into soil and water thoroughly. If the plant is established (varies from the size) repeat the fertilization twice a month, especially during the growing period.

For outdoors, add 2 tablespoons per gallon and mix, alternatively 5-10 pounds per cubic in the garden. Established outdoor corn, mix 1-2 tbsp. per gallon in the topsoil twice every month throughout the growing period.

The best side about Down to Earth Organic Bio-Fish is being 100% recycled even the plastic bag inside can be rinsed off and reused multiple times.

Besides nitrogen, this fertilizer includes 7% nitrogen, phosphorus, and calcium. It also contains 2% soluble potash (K2O) and 1% sulfur.

Why Should You Buy It?
The fertilizer is 100% recycled and doesn’t do any harm to the earth. It can improve the corn plant that suffers from different conditions.

Check Price On Amazon

5. Miracle-Gro Plant Food- Best Runner up

Miracle-Gro no coincidence is one of the best sellers for all purposes of use. It includes all the essential nutrients for healthy growth as well as more fruit production of corn. 

Miracle-Gro is preferable and safe for every kind of plant and the brand guarantees that there is no way to burn outdoor plants and houseplants.  

For the best result, use this fertilizer for 1-2 weeks while they are growing deliberately.

Here are a few steps on how to prepare the Miracle-Gro plant food. First, fill the jar with go water-soluble food, then you have to attach the hose. You have many watering patterns to choose from. Next, let the water run by squeezing the trigger located at the top.

For outdoor application combine 1 tablespoon of Miracle-Gro with 1 gallon of water. On the other hand, indoors planting, 1/2 teaspoon for 1 gallon of water. Use a watering can for both cases.

As for the applying area, add 1.5 lbs. food approximately 600 square feet with the Miracle-Gro fertilizer.

If you want to get the best out of it, you have to soak the base and apply the brand’s given instructions.

Why Should You Buy It?
The fertilizer goes along very well with every type of plant, flower, tree, shrubs and other houseplants.

Check Price On Amazon

6.  Dr. Earth Organic 5 – Best People & Pet Safe

Dr. Earth Organic 5 is made of 100% organic ingredients without any GMOs, chicken manure, or sewage sludge.

It highly contains pro-biotics and as the beneficial strains soil microbes together with ecto and endo mycorrhizae. That means you will get bigger crops and sweet corn. If you use mulch and compost, the corn will show healthy glow results.

Besides, it’s easy to use. For new plants apply 1 ½ cups for every 10 feet of cornrows and for developed corn increase the amount to ¾ cup for every 10 feet of corn plant zone.

You can use the product in granular form or in water-soluble tea.

It doesn’t include any toxic ingredients or synthetic chemicals that can harm people and pets. So, feel safe for yourself and your pet in that matter.

Why Should You Buy It?
It offers a lot more valuable nutrients than money and doesn’t harm people and pets. It has 7 beneficial macrobiotics and probiotics to feed the soil.

Check Price On Amazon

Granular Vs. Liquid Fertilizer

They both are graders’ preferable choices to feed not only corn but every vegetable, flower, and tree. Actually, there isn’t a huge difference between them. Let’s see how both work.

Granular Fertilizer

For corn plants, the best way to apply granular fertilizer is the well-known side dressing. Let’s imagine a shallow trough that is 6 inches deep away from the stem, and granules are sprinkled inside the trough before watering. Together with water, it will help deep penetration of the granules in the roots.

This is the quickest way for corn to absorb the nutrient from its roots. 

Liquid Fertilizer

The bright side about liquid fertilizer is coming in prepackaged form. That means the novice gardeners are able to dispense with minimal effort.

The user only needs to measure the aa handheld per backpack sprayer and add water, ta-da it’s ready for use. 

The dark side of liquid fertilizers is getting spilled during the mixing and in windy weather. Sometimes, the liquid fertilizer has a chance to land on leaves and stems or even move to the nearest other plants. 

The Satisfying pH Level in Corn

The satisfying pH level for optimal growth in corn is between 5.8 to 7. Additionally, rich compost and mulching of the plant plus nitrogen will provide the needed amount for a year. 

It would be great to test the soil’s pH beforehand with a kit so you won’t encounter any issues afterward. Bear in mind that corn can hastily use up the nutrients from the soil. 

A Brief Recap

Hopefully, the article was crystal clear and know you what and how to apply the fertilizers for your precious corn plant. Fertilizing requires consistence especially in growing period.

As the first thing to look for when buying a fertilizer is to contain the essential nutrients like nitrogen, calcium, potassium, and phosphorus.

Fertilizing should happen more often during the peak heat in summer because that’s where the corn absorbs the food quickest. You can choose granulated and liquid form of fertilizers, they are more or less the same.

Further Reading

So I assume you liked the article, and I assign you to check out other interesting articles in different topics, mainly focused on leaves.

Read why lemon trees turn yellow out of nowhere and what causes yellow appearance of garlic leaves.

Alternatively, check out how to fix the yellow leaves in beautiful iris and brownish leaves in hydrangea.

If you need a hose here I offer some useful water hoses for pressure washers.

Meet me in the next article, until then, stay tuned.


Natalia Michalska

About Us

FlowerPictures is a website dedicated to the most beautiful things in life - PLANTS!

Its run by enthusiast gardeners that have years of experience.