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Fertilizing Your Cucumber Plants

Gardening Guide: The Cucumber Grower’s Guide

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Fertilizing Your Cucumber Plants

By Norann Oleson

Cucumber plant with fertilizer in soil.

Cucumber plant with fertilizer in soil.

Cucumbers need lots of phosphorus and potassium to properly grow plentiful, healthy fruit, and fertilizers can provide the extra nutrients that cucumbers need to grow quickly and fully.

The use of fertilizer depends on the current nutrient content of your soil. To be certain, the best thing is to have your soil tested. If your soil is correctly balanced or high in nitrogen, you should use a fertilizer that is slightly lower in nitrogen and higher in phosphorus and potassium, such as a 5-10-10 mixed fertilizer. If your soil is lacking in nitrogen, use a balanced fertilizer like 8-8-8 or 10-10-10. If you can’t get a soil test, just go ahead and use higher phosphorus cucumber plant fertilizer—unless you’ve experienced past problems with sickly cucumber plants.

Avoid a fertilizer where the first number—for nitrogen—is higher than the other two. Too much nitrogen will give you lush, green cucumber plants, but very little fruit. Using straight-up phosphorus, and not a complete, mixed fertilizer, can solve this problem by minimizing the effects of too much nitrogen in the soil.

Fertilize your cucumbers when you first plant them. A side dressing of 5-10-10 fertilizer at the time of planting and once a month thereafter should be sufficient. Be sure to keep the fertilizer from directly coming in contact with the plant’s roots, otherwise it can burn the cucumber plant

Do you fertilize your cucumber plants? What type of fertilizer do you use? How often do you fertilize? Please tell us exactly how and when you fertilize your cucumber plants.

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balanced fertilizer, cucumbers, fertilizer

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TABLE OF CONTENTS

  • Curator’s Corner
  • Introduction
  • Feature Articles

  • Types of Cucumber Plants
  • Growing Cucumbers from Seeds or Seedlings
  • Where to Plant Your Cucumbers
  • Soil and Sun Requirements for Growing Cucumbers
  • Fertilizing Your Cucumber Plants
  • Watering Your Cucumber Plants
  • Weeding Your Cucumber Garden
  • Avoiding Cross-Pollination of Seedless Cucumbers
  • How to Spot, Treat, and Prevent Cucumber Diseases
  • What to Do About Pests that Can Harm Your Cucumber Plants
  • How to Identify, Treat, and Prevent Blossom-End Rot
  • Essential Tools and Equipment for Growing and Enjoying Cucumbers
  • Plant Profiles

  • Lemon Cucumbers
  • Double Yield Cucumbers
  • Straight Eight Cucumbers
  • Ashley Cucumbers
  • Muncher Cucumbers
  • English Cucumbers
  • Recipes

  • Tzatziki Cucumber Recipe
  • Traditional Greek Cucumber Salad
  • Cucumber Gazpacho
  • Shrimp and Cucumber Rounds
  • Easy Asian Cucumber Salad
  • Quick Pickled Cucumbers (Refrigerator Pickles)
  • Cucumber Martinis
  • Additional Articles

  • Nutrition Facts about Cucumbers
  • Home Remedies & Health Benefits of Cucumbers
  • Resources about Cucumbers
  • Cucumber Glossary
  • Related Articles

  • How to Make Pickles from Garden Cucumbers Without Canning
  • 9 Cucumber Companion Plants You Want In Your Garden (+ 1 to Avoid)
  • The Cucumber Grower’s Guide—All You Need to Know About Growing, Harvesting, Cooking, and Eating the Garden’s Coolest Crop

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