Yellow cucumbers are overripe cucumbers. Chlorophyll, the green color in cucumber peel, is broken down into sugars and turns yellow.
But some varieties are naturally yellow at harvest, like the lemon cucumber. Knowing the maturity days of the cucumber variety you are growing is a great way.
Lack of pollination in female flowers can also cause yellowing and abortion in young cucumber fruits. Cucumbers must be pollinated several times for proper development.
Exposure to high temperatures increases the production of ripening hormones and turns green cucumbers into soft, yellow cucumbers.
Yellow cucumbers may be caused by nutrient deficiency in cucumber plants. The lack of nitrogen used to make chlorophyll causes yellowing in fruits.
When cucumbers are planted in high density, fungal disease, and cucumber mosaic virus may cause yellow cucumbers
Yellow cucumbers are safe to eat. But be cautious of soft spots because they can be bacteria-producing toxins.
Lastly, washing your cucumbers thoroughly before eating them is the best practice.