A Complete Buying Guide of Good Fertilizers for Cucumbers

Written by Naomi Meza


Posted on September 16 2022

Fertilizers can help to improve the growth and yield of our cucumbers.

They can provide essential nutrients that our cucumbers need for healthy growth.

Fertilizers can also help to improve the quality of cucumbers by increasing the size, color, and flavor.

When choosing a fertilizer for cucumbers, we need to select one that is high in phosphorus and Potassium and low in nitrogen.


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Nitrogen is an essential nutrient for stem and leaf growth but the nitrogen requirement for cucumbers is lower than for other crops.

It is also important for us to consider the application method when selecting a fertilizer.

Fertilizers can be applied through the soil, leaves, or roots. The method of application will depend on the individual fertilizer.


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How to Use Cucumber Fertilizer

Greenway biotech cucumber fertilizer 8-16-36 plus micronutrients water soluble for hydroponic cucumber plants and soil application

Applying cucumber fertilizer is a great way to keep our cucumber plants healthy and productive.

To use cucumber fertilizer, we simply mix it with water according to the directions on the package. Then, apply it to the soil around our cucumber plants.

To apply our Cucumber 8-16-36 Fertilizer Plus Micronutrients, you can take 1/2 teaspoon of fertilizer and apply to the soil of your plant or dissolve the fertilizer in 1 gallon of water and drench your soil in that solution. 

You can also add the fertilizer to your hydroponic reservoir, since it's water soluble!

You should be sure to water the plants well after applying the fertilizer.

If starting cucumber plants from seed, we recommend applying fertilizer after the cucumbers have true leaves.


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At that point, you can apply our Cumber 8-16-36 Fertilizer Plus Micronutrients or you can apply a water-soluble, low-nitrogen fertilizer of your choice, which is rich in phosphorus and potassium.

The best time to fertilize cucumbers is when they are actively growing, so you should fertilize them every other week or so during the growing season.

It's helpful to monitor your plants after each fertilizer application to see how they respond to the nutrients. 

This ensures that you don't over fertilize your plants and can stretch your wallet in the long run, since you'll only apply fertilizer when absolutely necessary. 

You should be sure to follow the manufacturer's directions on how much fertilizer to use.

What is the Beneficial Effect of Cucumber Fertilizer on Trellised Cucumbers?

Cucumber growing on a trellis

You may be wondering if cucumbers grown on trellis' can benefit from fertilizer. The good news is they can!

In fact, there are several benefits of cucumber fertilizer for trellised cucumbers.

For one, it can help to promote healthier and more abundant fruit production.

Additionally, it can help to keep the leaves of the cucumber plants green and lush, and it can also help to prevent the spread of diseases.


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Overall, using cucumber fertilizer can help to ensure that our trellised cucumbers are as healthy and productive as possible.

Is Cucumber Fertilizer Suitable for Other Plants?

Purple eggplant growing in garden fertilized with Greenway Biotech Cumber 8-16-36 Fertilizer Plus Micronutrients

Cucumber fertilizer is also suitable for other plants, such as:

  • tomatoes
  • peppers
  • eggplants
  • zucchini
  • winter squash
  • mirliton
  • pumpkin
  • gourd
  • cucuzzi
  • watermelon
  • cantaloupe
  • cushaw
  • luffa
  • summer squash.

This is because cucumber plants and these other plants share many of the same nutrient needs.


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For example, all of these plants need nitrogen, phosphorus, and potassium to thrive.

Cucumber fertilizer can provide these nutrients in the right amounts, ensuring that our other plants stay healthy and productive.

What Makes a Good Cucumber Fertilizer?

Greenway Biotech Cucumber 8-16-36 Fertilizer Plus Micronutrients water soluble cucumber fertilizer for hydroponics and soil

A fertilizer that is low in nitrogen and high in phosphorus and potassium is good for fertilizing cucumbers.

Phosphorus aids in bud formation while potassium enables better water and nutrient transmission.

A good fertilizer should have an NPK ratio of 5-10-15 or higher in the last two values.


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This combination of nutrients will encourage leaves and strong stem growth, large fruit production, and efficient water and nutrient transmission throughout the plant.

A good cucumber fertilizer should also be free of harmful chemicals and heavy metals and should have an ample supply of chelated micronutrients.

Chelated micronutrients are nutrients that are bound to organic molecules, making them more easily absorbed by plants.

A good cucumber fertilizer will also have a slightly acidic pH, which is ideal for cucumbers.

Lucky enough, our Cucumber Fertilizer has all of these qualities and you can order your own bag of Cucumber Fertilizer 8-16-36 Plus Micro Nutrients here on our website to make your hydroponic cucumber crop radiant and get ready for a bountiful harvest!



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