Best Fertilizer For Cucumber: Top 5 Choices for 2022

You are currently viewing Best Fertilizer For Cucumber: Top 5 Choices for 2022

The best way to know the best fertilizer for Cucumber for you is by discovering your soil type. The soil type helps determine how much and what kind of nutrients are required by your Cucumbers. With sandy soil, it drains essential substances, and the ground becomes nutrient-poor very fast. On the other hand, heavy soils lock nutrients up.

You should add compost before planting Cucumber to improve garden soil. The organic matter in compost enriches light sandy soils and lightens heavy clay soils. Well-aged compost is the best source of food and nutrients for Cucumbers. There is only two percent nitrogen in compost. Compost releases nutrients slowly over many years. It adds nutrient reserves that stay available continuously in the soil for a long time.

Generally, Cucumbers require low Nitrogen fertilizer requirements. They need high Potassium and high Phosphorus levels. When you choose a commercial fertilizer formula, the first (N) of the three numbers should be much lower than the other two (PK).

Cucumbers belong to the Cucurbit family, which includes pumpkins (Cucurbita Maxima), squash, and gourds (Cucurbita Pepo). Cucumis Sativus is an annual vine grown throughout the United States of America.

Cucumbers produce best during prolonged, and warm summer months. Standard Cucumber vines proliferate and require vertical support or trellis. While dwarf bush Cucumbers support themselves, these Cucumbers do well in small garden plots or containers. To grow the best Cucumber, organic soil amendments must be met the nutrient requirements.

Cucumbers thrive well in full sun. The soil must be well-drained, moist, and fertile. Cucumbers favor a slightly acidic pH soil, between 6.0-6.5. Cucumbers require high water and need consistent moisture.

For proper growth, keep their leaves dry while you are watering to prevent fungal diseases. Vertically grown plants may require much more watering because they lose moisture more easily.

After the cucumber plants have produced blossoms, you should apply a balanced, all-purpose fertilizer. An all-purpose water-soluble fertilizer will do well. You can also apply a balanced granular fertilizer.

Best Fertilizer for Cucumber

18-3-6 All Purpose Liquid Fertilizer For Cucumber

18-3-6 is an all-purpose liquid fertilizer for cucumber formulated for outdoor and indoor application. The ingredients are Total Nitrogen (N) 18%, available Phosphoric Acid (P2O5) 3%, Soluble Potash (K2O) 6%, Copper (Cu) .05%, Iron (Fe) .1%, Manganese (Mn) .05%, and Zinc (Zn) .05%.

These ingredients come from Potassium Carbonate, Copper EDTA, Manganese EDTA, Zinc EDTA, Urea, Urea-Triazone Solution, Tetrapotassium Pyrophosphate, and Iron HEDTA.

You can apply one to two oz. of fertilizer to one gallon of water, and water well. Apply once every fourteen days. Use three oz. of cucumber fertilizer for every 1000 square feet. It is an excellent choice for a cucumber plant.

Dr. Earth Organic 5 Tomato, Vegetable, and Herb Fertilizer


This garden fertilizer comes in a four-pound bag that is an exceptional choice for fertilizer for Cucumber. The fertilizer can help provide the production of more abundant Cucumber with more tasty and nutritious vegetables.

The fertilizer gives optimum levels of essential plant nutrients such as fishbone meal, bone meal, feather meal, alfalfa meal, Potassium Sulfate, kelp meal, kelp flour, and rock phosphate. All these ingredients remove the need for harmful chemical fertilizers.

The formulation also consists of Ecto- and endo-mycorrhizae to provide the Cucumber to withstand drought tolerance, improve nutrient availability and increased plant performance. Nutrients are fast-released and feed continuously for several months.

Apply this Cucumber fertilizer one time every month during Cucumber’s growing season.

Miracle-Gro Water Soluble Plant Food Vegetables and Herbs

Miracle-Gro Water Soluble Plant Food Vegetables And Herbs can provide food for your Cucumber effortlessly and instantly, as well as vegetables and herbs. It is the best fertilizer for Cucumber, for tomatoes, for squash, for peppers, carrots, and basil.

When you apply this Cucumber fertilizer, the plant requires water, sunlight, and nutrition to prosper and grow all season long. For best Cucumber results, feed the every seven to fourteen during its growing stage.

You can soak the soil at the base of each plant to fertilize the roots. With two pounds, the formulation feeds approximately eight hundred square feet of garden area.

Combine 1 1/2 tablespoons per 1 1/2 gallons of water. For best results, 1 1/2 gallons covers about fifteen square feet. You must read the instruction label for application.

Lilly Miller Morcrop Tomato, Vegetable, and Cucumber Fertilizer


This 5-10-10 NPK Cucumber fertilizer produces many great-tasting vegetables, including Cucumber. It is a slow-release fertilizer for steady and lush plant growth. The ingredients consist of essential plant minerals and natural ingredients.

Lilly Miller combines natural ingredients with plant foods to produce plant food that gives Nitrogen. Apply this fertilizer for Cucumber at planting time. Thereafter, apply every four to six weeks during the growing season.

The fertilizer product is ready to use. You do not require mixing with water. Water well. Blend the fertilizer lightly into the topsoil but do not damage the roots.

Miracle-Gro Performance Organics Edibles Plant Nutrition For Cucumber

The organic ingredients in this fertilizer for Cucumber product are formulated for growing Cucumber, tomatoes, vegetables, fruits, and herbs. When you apply this plant food, it will instantly feed edible plants in containers and in-ground.

Apply every seven days by using a watering can. One gallon can cover 10 square feet of garden.

The ingredients consist of NPK, calcium, zinc, iron, and manganese. These ingredients are derived from bone meal, soy protein, phosphate rock, and other elements.

Cucumber FAQ and Other Information

Facts about Cucumbers

  • Common Name: Cucumber 
  • Scientific name: Cucumis Sativus
  • Type: Annual
  • Family: Cucurbitaceae
  • Native: East Indies
  • USDA Hardiness Zone: 2 to 11
  • Height: between 0.75 to 1.50 feet
  • Spread: between 3 to 8 feet
  • Bloom Time: Seasonal bloomer
  • Bloom color: Yellow
  • Light requirement: Full sun
  • Water: Medium
  • Maintenance: Medium
  • Suggested Use: Annual, Vegetable
  • Flower: Showy
  • Fruit: Showy, Edible

What is the best time to fertilize Cucumber?

Use a low nitrogen, high potassium, and high phosphorus formula. The best time to fertilize Cucumber is to apply fertilizer at planting.

Thereafter, apply fertilizer for cucumber one week after bloom. You should also apply fertilizer every three weeks. Mix directly to the soil around the Cucumber.

You can also work a granular fertilizer into the soil. It would help if you kept in mind to avoid over-fertilize, or the fruits will get stunted.

How often should you fertilize Cucumber?

You should apply fertilizer for cucumber one time at planting. Once at one week after the Cucumber bloom. The regular application should be every 90 days directly to the soil around the plants.

Why are the Cucumbers leaves turning yellow?

When Cucumbers become overripe, their green leaves coloring starts to fade—this event causing a yellowing pigment. A yellow Cucumber can also be the result of a not a balanced nutrient, lack of sunlight, attack by a virus, and overwater.

How much fertilizer does a cucumber plant need?

The Nitrogen helps the Cucumber plant foliage grow at the maximum. The Potassium and Phosphate will help with fruit production. To apply fertilizer, you should read the manufacturer’s directions. Commonly, fertilizer for Cucumber is applied at a rate of 1 1/2 pounds per 100 square feet.

How many Cucumbers will one plant produce?

Commonly, a healthy Cucumber plant produces about five pounds of Cucumbers per plant. Plan on growing about two to three plants per person in your household. Apply fertilizer for cucumber to increase the plant’s yield.

Read More About Fertilizers

Best Fertilizer For Green Grass – 10 Options in 2022

Best Fertilizer For Citrus Trees: 10 Options for 2022

Best New Grass Fertilizer – 5 Options in 2022

Best Fertilizer for Strawberries: 10 Options in 2022

Best Fertilizer For Peppers – Top 10 Choices in 2022

Best Fertilizer For Cucumber: Top 5 Choices for 2022

Best Organic Lawn Fertilizers: 5 Options in 2022

Best Zoysia Grass Fertilizer: 10 Choices for 2022

Best Fertilizer for Bermuda Grass: 10 Options for 2022

Best Fertilizer For Watermelon: 5 Choices for 2022

10 Best Fertilizer For Magnolia Trees: 2022 Guide

Best Fertilizer for Hibiscus: 10 Choices for 2022

Best Liquid Fertilizer For Grass – Top 5 Options for 2022

5 Best Fertilizer For Plumeria 2022

5 Best Fertilizer For Gardenias In Pots 2022

Best Azalea Fertilizer – Top 5 Choices in 2022