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Cucumber Leaves Are Wilting and Turning Yellow

It’s quite the worrying sign when you start to notice that the leaves of your cucumber plant are wilting and turning yellow. This is usually a sign that something is wrong with your plant. Here are the most common causes that may explain the change in foliage color and steps you can take to make your cucumber plant healthy again.

#1 Culprit: Watering

This doesn’t just apply to cucumbers but pretty much any other vegetables and fruits you may grow indoors or outdoors. Over-watering or under-watering is usually the most common culprit for leaves that start to turn yellow. Over-watering, for example, can cause cucumber leaves to turn yellow because the highly-saturated soil depletes the amount of oxygen the plant is able to absorb. Over-watering also increases the likelihood of cucumber plants developing diseases like root rot.

It’s easier to fix a under-watered situation than an over-watered one. Make sure to only water your cucumber plant when the top inches of the soil start to feel dry. If the existing soil is too compact then it might be necessary to transplant the cucumber plant in an attempt to save it.

#2 Presence of Pests

Yellow, wilting leaves may also be caused by the presence of pests, some of which are not easily identifiable at first sight. It’s less likely to be a problem for cucumber plants grown indoors but you should check to make sure there aren’t any pests damaging the plant, especially the leaves. Common pests for cucumber plants include aphids, spider mites, and white flies.

#3 Improper Nutritional Balance

The cucumber plant could be lacking certain nutrients that allow it to maintain lush, green leaves. The leaves of cucumber plants could turn yellow if there is a lack of nitrogen. Fortunately, this problem is easy to solve and there won’t be too much harm done to your plant as long as you resolve it at an early stage. One way to replenish the potted soil with more nitrogen is by adding in a layer of rich compost.


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